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<div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Indice</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">nascondi</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Inizio</div> </a> </li> <li id="toc-Utilizzi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Utilizzi"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Utilizzi</span> </div> </a> <ul id="toc-Utilizzi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Precauzioni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Precauzioni"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Precauzioni</span> </div> </a> <ul id="toc-Precauzioni-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sintesi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sintesi"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Sintesi</span> </div> </a> <ul id="toc-Sintesi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Note" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Note"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Note</span> </div> </a> <ul id="toc-Note-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Voci_correlate" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Voci_correlate"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altri_progetti" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Altri_progetti"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Altri progetti</span> </div> </a> <ul id="toc-Altri_progetti-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Collegamenti_esterni" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Collegamenti_esterni"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Collegamenti esterni</span> </div> </a> <ul id="toc-Collegamenti_esterni-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Mostra/Nascondi l'indice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Idrossido di sodio</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Vai a una voce in un'altra lingua. Disponibile in 80 lingue" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-80" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">80 lingue</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Natriumhidroksied" title="Natriumhidroksied - afrikaans" lang="af" hreflang="af" data-title="Natriumhidroksied" data-language-autonym="Afrikaans" data-language-local-name="afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%87%D9%8A%D8%AF%D8%B1%D9%88%D9%83%D8%B3%D9%8A%D8%AF_%D8%A7%D9%84%D8%B5%D9%88%D8%AF%D9%8A%D9%88%D9%85" title="هيدروكسيد الصوديوم - arabo" lang="ar" hreflang="ar" data-title="هيدروكسيد الصوديوم" data-language-autonym="العربية" data-language-local-name="arabo" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Hidr%C3%B3xidu_de_sodiu" title="Hidróxidu de sodiu - asturiano" lang="ast" hreflang="ast" data-title="Hidróxidu de sodiu" data-language-autonym="Asturianu" data-language-local-name="asturiano" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%B3%D9%88%D8%AF%DB%8C%D9%88%D9%85_%D9%87%DB%8C%D8%AF%D8%B1%D9%88%DA%A9%D8%B3%DB%8C%D8%AF" title="سودیوم هیدروکسید - South Azerbaijani" lang="azb" hreflang="azb" data-title="سودیوم هیدروکسید" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B5%D0%B2_%D1%85%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Натриев хидроксид - bulgaro" lang="bg" hreflang="bg" data-title="Натриев хидроксид" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A7%8B%E0%A6%A1%E0%A6%BF%E0%A6%AF%E0%A6%BC%E0%A6%BE%E0%A6%AE_%E0%A6%B9%E0%A6%BE%E0%A6%87%E0%A6%A1%E0%A7%8D%E0%A6%B0%E0%A7%8B%E0%A6%95%E0%A7%8D%E0%A6%B8%E0%A6%BE%E0%A6%87%E0%A6%A1" title="সোডিয়াম হাইড্রোক্সাইড - bengalese" lang="bn" hreflang="bn" data-title="সোডিয়াম হাইড্রোক্সাইড" data-language-autonym="বাংলা" data-language-local-name="bengalese" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Natrij-hidroksid" title="Natrij-hidroksid - bosniaco" lang="bs" hreflang="bs" data-title="Natrij-hidroksid" data-language-autonym="Bosanski" data-language-local-name="bosniaco" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Hidr%C3%B2xid_de_sodi" title="Hidròxid de sodi - catalano" lang="ca" hreflang="ca" data-title="Hidròxid de sodi" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Hydroxid_sodn%C3%BD" title="Hydroxid sodný - ceco" lang="cs" hreflang="cs" data-title="Hydroxid sodný" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B9_%D0%B3%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D1%87%C4%95" title="Натрий гидроксичĕ - ciuvascio" lang="cv" hreflang="cv" data-title="Натрий гидроксичĕ" data-language-autonym="Чӑвашла" data-language-local-name="ciuvascio" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Natriumhydroxid" title="Natriumhydroxid - danese" lang="da" hreflang="da" data-title="Natriumhydroxid" data-language-autonym="Dansk" data-language-local-name="danese" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Natriumhydroxid" title="Natriumhydroxid - tedesco" lang="de" hreflang="de" data-title="Natriumhydroxid" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A5%CE%B4%CF%81%CE%BF%CE%BE%CE%B5%CE%AF%CE%B4%CE%B9%CE%BF_%CF%84%CE%BF%CF%85_%CE%BD%CE%B1%CF%84%CF%81%CE%AF%CE%BF%CF%85" title="Υδροξείδιο του νατρίου - greco" lang="el" hreflang="el" data-title="Υδροξείδιο του νατρίου" data-language-autonym="Ελληνικά" data-language-local-name="greco" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Sodium_hydroxide" title="Sodium hydroxide - inglese" lang="en" hreflang="en" data-title="Sodium hydroxide" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Natria_hidroksido" title="Natria hidroksido - esperanto" lang="eo" hreflang="eo" data-title="Natria hidroksido" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Hidr%C3%B3xido_de_sodio" title="Hidróxido de sodio - spagnolo" lang="es" hreflang="es" data-title="Hidróxido de sodio" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Naatriumh%C3%BCdroksiid" title="Naatriumhüdroksiid - estone" lang="et" hreflang="et" data-title="Naatriumhüdroksiid" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Sodio_hidroxido" title="Sodio hidroxido - basco" lang="eu" hreflang="eu" data-title="Sodio hidroxido" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%AF%DB%8C%D9%85_%D9%87%DB%8C%D8%AF%D8%B1%D9%88%DA%A9%D8%B3%DB%8C%D8%AF" title="سدیم هیدروکسید - persiano" lang="fa" hreflang="fa" data-title="سدیم هیدروکسید" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Natriumhydroksidi" title="Natriumhydroksidi - finlandese" lang="fi" hreflang="fi" data-title="Natriumhydroksidi" data-language-autonym="Suomi" data-language-local-name="finlandese" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Hydroxyde_de_sodium" title="Hydroxyde de sodium - francese" lang="fr" hreflang="fr" data-title="Hydroxyde de sodium" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Naatriumh%C3%BCdroksiid" title="Naatriumhüdroksiid - frisone settentrionale" lang="frr" hreflang="frr" data-title="Naatriumhüdroksiid" data-language-autonym="Nordfriisk" data-language-local-name="frisone settentrionale" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Hidr%C3%B3xido_de_sodio" title="Hidróxido de sodio - galiziano" lang="gl" hreflang="gl" data-title="Hidróxido de sodio" data-language-autonym="Galego" data-language-local-name="galiziano" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Hiddrocseed_hodjum" title="Hiddrocseed hodjum - mannese" lang="gv" hreflang="gv" data-title="Hiddrocseed hodjum" data-language-autonym="Gaelg" data-language-local-name="mannese" class="interlanguage-link-target"><span>Gaelg</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A0%D7%AA%D7%A8%D7%9F_%D7%94%D7%99%D7%93%D7%A8%D7%95%D7%A7%D7%A1%D7%99%D7%93%D7%99" title="נתרן הידרוקסידי - ebraico" lang="he" hreflang="he" data-title="נתרן הידרוקסידי" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A5%8B%E0%A4%A1%E0%A4%BF%E0%A4%AF%E0%A4%AE_%E0%A4%B9%E0%A4%BE%E0%A4%87%E0%A4%A1%E0%A5%8D%E0%A4%B0%E0%A5%89%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A4%BE%E0%A4%87%E0%A4%A1" title="सोडियम हाइड्रॉक्साइड - hindi" lang="hi" hreflang="hi" data-title="सोडियम हाइड्रॉक्साइड" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Natrijev_hidroksid" title="Natrijev hidroksid - croato" lang="hr" hreflang="hr" data-title="Natrijev hidroksid" data-language-autonym="Hrvatski" data-language-local-name="croato" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/N%C3%A1trium-hidroxid" title="Nátrium-hidroxid - ungherese" lang="hu" hreflang="hu" data-title="Nátrium-hidroxid" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%86%D5%A1%D5%BF%D6%80%D5%AB%D5%B8%D6%82%D5%B4%D5%AB_%D5%B0%D5%AB%D5%A4%D6%80%D6%85%D6%84%D5%BD%D5%AB%D5%A4" title="Նատրիումի հիդրօքսիդ - armeno" lang="hy" hreflang="hy" data-title="Նատրիումի հիդրօքսիդ" data-language-autonym="Հայերեն" data-language-local-name="armeno" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Natrium_hidroksida" title="Natrium hidroksida - indonesiano" lang="id" hreflang="id" data-title="Natrium hidroksida" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/V%C3%ADtiss%C3%B3di" title="Vítissódi - islandese" lang="is" hreflang="is" data-title="Vítissódi" data-language-autonym="Íslenska" data-language-local-name="islandese" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%B0%B4%E9%85%B8%E5%8C%96%E3%83%8A%E3%83%88%E3%83%AA%E3%82%A6%E3%83%A0" title="水酸化ナトリウム - giapponese" lang="ja" hreflang="ja" data-title="水酸化ナトリウム" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Natrium_hidroksida" title="Natrium hidroksida - giavanese" lang="jv" hreflang="jv" data-title="Natrium hidroksida" data-language-autonym="Jawa" data-language-local-name="giavanese" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%9C%E1%83%90%E1%83%A2%E1%83%A0%E1%83%98%E1%83%A3%E1%83%9B%E1%83%98%E1%83%A1_%E1%83%B0%E1%83%98%E1%83%93%E1%83%A0%E1%83%9D%E1%83%A5%E1%83%A1%E1%83%98%E1%83%93%E1%83%98" title="ნატრიუმის ჰიდროქსიდი - georgiano" lang="ka" hreflang="ka" data-title="ნატრიუმის ჰიდროქსიდი" data-language-autonym="ქართული" data-language-local-name="georgiano" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kaa mw-list-item"><a href="https://kaa.wikipedia.org/wiki/Natriy_gidroksid" title="Natriy gidroksid - kara-kalpak" lang="kaa" hreflang="kaa" data-title="Natriy gidroksid" data-language-autonym="Qaraqalpaqsha" data-language-local-name="kara-kalpak" class="interlanguage-link-target"><span>Qaraqalpaqsha</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B9_%D0%B3%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4%D1%96" title="Натрий гидроксиді - kazako" lang="kk" hreflang="kk" data-title="Натрий гидроксиді" data-language-autonym="Қазақша" data-language-local-name="kazako" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%88%98%EC%82%B0%ED%99%94_%EB%82%98%ED%8A%B8%EB%A5%A8" title="수산화 나트륨 - coreano" lang="ko" hreflang="ko" data-title="수산화 나트륨" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B9_%D0%B3%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4%D0%B8" title="Натрий гидроксиди - kirghiso" lang="ky" hreflang="ky" data-title="Натрий гидроксиди" data-language-autonym="Кыргызча" data-language-local-name="kirghiso" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Lixivium" title="Lixivium - latino" lang="la" hreflang="la" data-title="Lixivium" data-language-autonym="Latina" data-language-local-name="latino" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Natrio_hidroksidas" title="Natrio hidroksidas - lituano" lang="lt" hreflang="lt" data-title="Natrio hidroksidas" data-language-autonym="Lietuvių" data-language-local-name="lituano" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/N%C4%81trija_hidroks%C4%ABds" title="Nātrija hidroksīds - lettone" lang="lv" hreflang="lv" data-title="Nātrija hidroksīds" data-language-autonym="Latviešu" data-language-local-name="lettone" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D1%83%D0%BC_%D1%85%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Натриум хидроксид - macedone" lang="mk" hreflang="mk" data-title="Натриум хидроксид" data-language-autonym="Македонски" data-language-local-name="macedone" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B8%E0%B5%8B%E0%B4%A1%E0%B4%BF%E0%B4%AF%E0%B4%82_%E0%B4%B9%E0%B5%88%E0%B4%A1%E0%B5%8D%E0%B4%B0%E0%B5%8B%E0%B4%95%E0%B5%8D%E0%B4%B8%E0%B5%88%E0%B4%A1%E0%B5%8D" title="സോഡിയം ഹൈഡ്രോക്സൈഡ് - malayalam" lang="ml" hreflang="ml" data-title="സോഡിയം ഹൈഡ്രോക്സൈഡ്" data-language-autonym="മലയാളം" data-language-local-name="malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D0%B9%D0%BD_%D0%B3%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Натрийн гидроксид - mongolo" lang="mn" hreflang="mn" data-title="Натрийн гидроксид" data-language-autonym="Монгол" data-language-local-name="mongolo" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Natrium_hidroksida" title="Natrium hidroksida - malese" lang="ms" hreflang="ms" data-title="Natrium hidroksida" data-language-autonym="Bahasa Melayu" data-language-local-name="malese" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%86%E1%80%AD%E1%80%AF%E1%80%92%E1%80%AE%E1%80%9A%E1%80%99%E1%80%BA_%E1%80%9F%E1%80%AD%E1%80%AF%E1%80%80%E1%80%BA%E1%80%92%E1%80%9B%E1%80%B1%E1%80%AC%E1%80%80%E1%80%BA%E1%80%86%E1%80%AD%E1%80%AF%E1%80%92%E1%80%BA" title="ဆိုဒီယမ် ဟိုက်ဒရောက်ဆိုဒ် - birmano" lang="my" hreflang="my" data-title="ဆိုဒီယမ် ဟိုက်ဒရောက်ဆိုဒ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmano" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Natriumhydroxid" title="Natriumhydroxid - basso tedesco" lang="nds" hreflang="nds" data-title="Natriumhydroxid" data-language-autonym="Plattdüütsch" data-language-local-name="basso tedesco" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Natriumhydroxide" title="Natriumhydroxide - olandese" lang="nl" hreflang="nl" data-title="Natriumhydroxide" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Natriumhydroksid" title="Natriumhydroksid - norvegese nynorsk" lang="nn" hreflang="nn" data-title="Natriumhydroksid" data-language-autonym="Norsk nynorsk" data-language-local-name="norvegese nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Natriumhydroksid" title="Natriumhydroksid - norvegese bokmål" lang="nb" hreflang="nb" data-title="Natriumhydroksid" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Idroxid_de_s%C3%B2di" title="Idroxid de sòdi - occitano" lang="oc" hreflang="oc" data-title="Idroxid de sòdi" data-language-autonym="Occitan" data-language-local-name="occitano" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Wodorotlenek_sodu" title="Wodorotlenek sodu - polacco" lang="pl" hreflang="pl" data-title="Wodorotlenek sodu" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%DA%A9%D8%A7%D8%B3%D9%B9%DA%A9_%D8%B3%D9%88%DA%88%D8%A7" title="کاسٹک سوڈا - Western Punjabi" lang="pnb" hreflang="pnb" data-title="کاسٹک سوڈا" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Hidr%C3%B3xido_de_s%C3%B3dio" title="Hidróxido de sódio - portoghese" lang="pt" hreflang="pt" data-title="Hidróxido de sódio" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Hidroxid_de_sodiu" title="Hidroxid de sodiu - rumeno" lang="ro" hreflang="ro" data-title="Hidroxid de sodiu" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Hidroxidu_di_natriu" title="Hidroxidu di natriu - arumeno" lang="rup" hreflang="rup" data-title="Hidroxidu di natriu" data-language-autonym="Armãneashti" data-language-local-name="arumeno" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%93%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4_%D0%BD%D0%B0%D1%82%D1%80%D0%B8%D1%8F" title="Гидроксид натрия - russo" lang="ru" hreflang="ru" data-title="Гидроксид натрия" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Sodium_hydroxide" title="Sodium hydroxide - scozzese" lang="sco" hreflang="sco" data-title="Sodium hydroxide" data-language-autonym="Scots" data-language-local-name="scozzese" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Natrijum_hidroksid" title="Natrijum hidroksid - serbo-croato" lang="sh" hreflang="sh" data-title="Natrijum hidroksid" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbo-croato" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Sodium_hydroxide" title="Sodium hydroxide - Simple English" lang="en-simple" hreflang="en-simple" data-title="Sodium hydroxide" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Hydroxid_sodn%C3%BD" title="Hydroxid sodný - slovacco" lang="sk" hreflang="sk" data-title="Hydroxid sodný" data-language-autonym="Slovenčina" data-language-local-name="slovacco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Natrijev_hidroksid" title="Natrijev hidroksid - sloveno" lang="sl" hreflang="sl" data-title="Natrijev hidroksid" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Sodium_Hydroxide" title="Sodium Hydroxide - somalo" lang="so" hreflang="so" data-title="Sodium Hydroxide" data-language-autonym="Soomaaliga" data-language-local-name="somalo" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Hidroksidi_i_natriumit" title="Hidroksidi i natriumit - albanese" lang="sq" hreflang="sq" data-title="Hidroksidi i natriumit" data-language-autonym="Shqip" data-language-local-name="albanese" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%9D%D0%B0%D1%82%D1%80%D0%B8%D1%98%D1%83%D0%BC-%D1%85%D0%B8%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Натријум-хидроксид - serbo" lang="sr" hreflang="sr" data-title="Натријум-хидроксид" data-language-autonym="Српски / srpski" data-language-local-name="serbo" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Natriumhydroxid" title="Natriumhydroxid - svedese" lang="sv" hreflang="sv" data-title="Natriumhydroxid" data-language-autonym="Svenska" data-language-local-name="svedese" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%9A%E0%AF%8B%E0%AE%9F%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%8D_%E0%AE%90%E0%AE%A4%E0%AE%B0%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%9A%E0%AF%88%E0%AE%9F%E0%AF%81" title="சோடியம் ஐதராக்சைடு - tamil" lang="ta" hreflang="ta" data-title="சோடியம் ஐதராக்சைடு" data-language-autonym="தமிழ்" data-language-local-name="tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B8%E0%B1%8B%E0%B0%A1%E0%B0%BF%E0%B0%AF%E0%B0%82_%E0%B0%B9%E0%B1%88%E0%B0%A1%E0%B1%8D%E0%B0%B0%E0%B0%BE%E0%B0%95%E0%B1%8D%E0%B0%B8%E0%B1%88%E0%B0%A1%E0%B1%8D" title="సోడియం హైడ్రాక్సైడ్ - telugu" lang="te" hreflang="te" data-title="సోడియం హైడ్రాక్సైడ్" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%82%E0%B8%8B%E0%B8%94%E0%B8%B2%E0%B9%84%E0%B8%9F" title="โซดาไฟ - thailandese" lang="th" hreflang="th" data-title="โซดาไฟ" data-language-autonym="ไทย" data-language-local-name="thailandese" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Sodyum_hidroksit" title="Sodyum hidroksit - turco" lang="tr" hreflang="tr" data-title="Sodyum hidroksit" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%93%D1%96%D0%B4%D1%80%D0%BE%D0%BA%D1%81%D0%B8%D0%B4_%D0%BD%D0%B0%D1%82%D1%80%D1%96%D1%8E" title="Гідроксид натрію - ucraino" lang="uk" hreflang="uk" data-title="Гідроксид натрію" data-language-autonym="Українська" data-language-local-name="ucraino" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%86%D8%B7%D8%B1%D9%88%D9%86_%DA%A9%D8%A7%D9%88%DB%8C" title="نطرون کاوی - urdu" lang="ur" hreflang="ur" data-title="نطرون کاوی" data-language-autonym="اردو" data-language-local-name="urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Natriy_gidroksid" title="Natriy gidroksid - uzbeco" lang="uz" hreflang="uz" data-title="Natriy gidroksid" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="uzbeco" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Natri_hydroxide" title="Natri hydroxide - vietnamita" lang="vi" hreflang="vi" data-title="Natri hydroxide" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Sodium_hydroxide" title="Sodium hydroxide - waray" lang="war" hreflang="war" data-title="Sodium hydroxide" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E6%B0%A2%E6%B0%A7%E5%8C%96%E9%92%A0" title="氢氧化钠 - wu" lang="wuu" hreflang="wuu" data-title="氢氧化钠" data-language-autonym="吴语" data-language-local-name="wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%B0%A2%E6%B0%A7%E5%8C%96%E9%92%A0" title="氢氧化钠 - cinese" lang="zh" hreflang="zh" data-title="氢氧化钠" data-language-autonym="中文" data-language-local-name="cinese" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E6%B0%AB%E6%B0%A7%E5%8C%96%E9%88%89" title="氫氧化鈉 - cinese classico" lang="lzh" hreflang="lzh" data-title="氫氧化鈉" data-language-autonym="文言" data-language-local-name="cinese classico" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Ch%C3%BAi-sng-ho%C3%A0_natrium" title="Chúi-sng-hoà natrium - min nan" lang="nan" hreflang="nan" data-title="Chúi-sng-hoà natrium" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="min nan" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%93%A5%E5%A3%AB%E7%9A%84" title="哥士的 - cantonese" lang="yue" hreflang="yue" data-title="哥士的" data-language-autonym="粵語" data-language-local-name="cantonese" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q102769#sitelinks-wikipedia" title="Modifica collegamenti interlinguistici" class="wbc-editpage">Modifica collegamenti</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespace"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li 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class="vector-menu-heading"> Stampa/esporta </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Speciale:Libro&bookcmd=book_creator&referer=Idrossido+di+sodio"><span>Crea un libro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Speciale:DownloadAsPdf&page=Idrossido_di_sodio&action=show-download-screen"><span>Scarica come PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Idrossido_di_sodio&printable=yes" title="Versione stampabile di questa pagina [p]" accesskey="p"><span>Versione stampabile</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> In altri progetti </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link 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class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspetto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">sposta nella barra laterale</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">nascondi</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Da Wikipedia, l'enciclopedia libera.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Reindirizzamento da <strong><a href="/w/index.php?title=NaOH&redirect=no" class="mw-redirect" title="NaOH">NaOH</a></strong>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="it" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r133964453">.mw-parser-output .avviso .mbox-text-div>div,.mw-parser-output .avviso .mbox-text-full-div>div{font-size:90%}.mw-parser-output .avviso .mbox-image{flex-basis:52px;flex-grow:0;flex-shrink:0}.mw-parser-output .avviso .mbox-text-full-div .hide-when-compact{display:block}</style><div style="" class="ambox metadata noprint plainlinks avviso avviso-contenuto"> <div class="avviso-immagine mbox-image noprint"><span typeof="mw:File"><a href="/wiki/File:Question_book_magnify.svg" class="mw-file-description" title="Nessuna nota a piè di pagina"><img alt="Nessuna nota a piè di pagina" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Question_book_magnify.svg/45px-Question_book_magnify.svg.png" decoding="async" width="45" height="45" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Question_book_magnify.svg/68px-Question_book_magnify.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Question_book_magnify.svg/90px-Question_book_magnify.svg.png 2x" data-file-width="60" data-file-height="60" /></a></span></div> <div class="avviso-testo mbox-text"> <div class="mbox-text-div"><b>Questa voce o sezione  sull'argomento chimica è priva o carente di <a href="/wiki/Wikipedia:Uso_delle_fonti" title="Wikipedia:Uso delle fonti">note</a> e <a href="/wiki/Aiuto:Uso_delle_fonti#Citazioni_nel_testo_.28citazioni_interne.29_e_alla_fine" title="Aiuto:Uso delle fonti">riferimenti bibliografici puntuali</a></b>. <div class="hide-when-compact"> <div class="noprint"><hr />Sebbene vi siano una <a href="/wiki/Aiuto:Bibliografia" title="Aiuto:Bibliografia">bibliografia</a> e/o dei <a href="/wiki/Wikipedia:Collegamenti_esterni" title="Wikipedia:Collegamenti esterni">collegamenti esterni</a>, manca la contestualizzazione delle fonti con <a href="/wiki/Aiuto:Note" title="Aiuto:Note">note a piè di pagina</a> o altri riferimenti precisi che indichino puntualmente la provenienza delle informazioni. Puoi <a class="external text" href="https://it.wikipedia.org/w/index.php?title=Idrossido_di_sodio&action=edit">migliorare questa voce</a> <a href="/wiki/Wikipedia:Uso_delle_fonti" title="Wikipedia:Uso delle fonti">citando le fonti</a> più precisamente. Segui i suggerimenti del <a href="/wiki/Progetto:Chimica" title="Progetto:Chimica">progetto di riferimento</a>.</div> </div> </div> </div> </div> <table class="infobox sinottico" summary="Tabella sinottica che riassume i principali dati del soggetto" style="width:300px;"><tbody><tr class="sinottico_testata"><th colspan="2" style="background-color:#AADDFF;">Idrossido di sodio</th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:Sodium-hydroxide-crystal-3D-vdW.png" class="mw-file-description" title="idrossido di sodio"><img alt="idrossido di sodio" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Sodium-hydroxide-crystal-3D-vdW.png/260px-Sodium-hydroxide-crystal-3D-vdW.png" decoding="async" width="260" height="195" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Sodium-hydroxide-crystal-3D-vdW.png/390px-Sodium-hydroxide-crystal-3D-vdW.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Sodium-hydroxide-crystal-3D-vdW.png/520px-Sodium-hydroxide-crystal-3D-vdW.png 2x" data-file-width="1100" data-file-height="827" /></a><figcaption>idrossido di sodio</figcaption></figure> </td></tr><tr><td class="sinottico_testo_centrale" colspan="2"><figure class="mw-halign-center" typeof="mw:File/Frameless"><a href="/wiki/File:SodiumHydroxide.jpg" class="mw-file-description" title="cristallo di idrossido di sodio"><img alt="cristallo di idrossido di sodio" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/SodiumHydroxide.jpg/260px-SodiumHydroxide.jpg" decoding="async" width="260" height="207" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/34/SodiumHydroxide.jpg/390px-SodiumHydroxide.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/34/SodiumHydroxide.jpg/520px-SodiumHydroxide.jpg 2x" data-file-width="2221" data-file-height="1764" /></a><figcaption>cristallo di idrossido di sodio</figcaption></figure> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#DDEEFF;">Nome <a href="/wiki/Unione_internazionale_di_chimica_pura_e_applicata" title="Unione internazionale di chimica pura e applicata">IUPAC</a></th></tr><tr><td class="sinottico_testo_centrale" colspan="2">idrossido di sodio </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#DDEEFF;">Nomi alternativi</th></tr><tr><td class="sinottico_testo_centrale" colspan="2">idrato di sodio<br />idrossido sodico<br />soda caustica<br /><a href="/wiki/Liscivia" title="Liscivia">liscivia</a> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#AAEEFF;">Caratteristiche generali</th></tr><tr><th><a href="/wiki/Formula_bruta" title="Formula bruta">Formula bruta</a> o <a href="/wiki/Formula_molecolare" title="Formula molecolare">molecolare</a></th><td>NaOH </td></tr><tr><th><a href="/wiki/Peso_formula" title="Peso formula">Peso formula</a> (<a href="/wiki/Unit%C3%A0_di_massa_atomica" title="Unità di massa atomica">u</a>)</th><td>39,9971 </td></tr><tr><th><a href="/wiki/Colore" title="Colore">Aspetto</a></th><td>solido cristallino bianco </td></tr><tr><th><a href="/wiki/Numero_CAS" title="Numero CAS">Numero CAS</a></th><td><span class="reflink plainlinksneverexpand"><span class="noarchive"><a class="external text" href="https://iw.toolforge.org/magnustools/cas.php?language=it&cas=1310-73-2">1310-73-2</a></span></span> </td></tr><tr><th><a href="/wiki/Numero_EINECS" title="Numero EINECS">Numero EINECS</a></th><td>215-185-5 </td></tr><tr><th><a href="/wiki/PubChem" title="PubChem">PubChem</a></th><td><a rel="nofollow" class="external text" href="http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=14798">14798</a> </td></tr><tr><th><a href="/wiki/DrugBank" title="DrugBank">DrugBank</a></th><td><a rel="nofollow" class="external text" href="http://www.drugbank.ca/drugs/DBDB11151">DBDB11151</a> </td></tr><tr><th><a href="/wiki/SMILES" title="SMILES">SMILES</a></th><td><div style="word-break: break-all;"><code style="background-color:transparent; border:none">[OH-].[Na+]</code></div> </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#AAEEFF;">Proprietà chimico-fisiche</th></tr><tr><th><a href="/wiki/Densit%C3%A0" title="Densità">Densità</a> (g/cm<sup>3</sup>, in <a href="/wiki/Condizioni_standard" title="Condizioni standard">c.s.</a>)</th><td>2,13 </td></tr><tr><th><a href="/wiki/Costante_di_dissociazione_basica" title="Costante di dissociazione basica">Costante di dissociazione basica</a> a 298 K</th><td><span class="nowrap"><span data-sort-value="7002269149999999999♠"></span>2,6915<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>2</sup></span> </td></tr><tr><th><a href="/wiki/Solubilit%C3%A0" title="Solubilità">Solubilità</a> in <a href="/wiki/Acqua" title="Acqua">acqua</a></th><td><span class="nowrap"><span data-sort-value="7003109000000000000♠"></span>1<span style="margin-left:.25em;">090</span> g/L</span> a <span class="nowrap"><span data-sort-value="7002293000000000000♠"></span>293 K</span> </td></tr><tr><th><a href="/wiki/Temperatura_di_fusione" class="mw-redirect" title="Temperatura di fusione">Temperatura di fusione</a></th><td>323 °C (596 K) </td></tr><tr><th><a href="/wiki/Temperatura_di_ebollizione" class="mw-redirect" title="Temperatura di ebollizione">Temperatura di ebollizione</a></th><td>1 390 °C (1 660 K) </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#AAEEFF;">Proprietà termochimiche</th></tr><tr><th><a href="/wiki/Entalpia_standard_di_formazione" title="Entalpia standard di formazione">Δ<sub>f</sub>H<sup>0</sup></a> (kJ·mol<sup>−1</sup>)</th><td>−425,8 </td></tr><tr><th><a href="/wiki/Energia_libera_di_Gibbs_standard_di_formazione" title="Energia libera di Gibbs standard di formazione">Δ<sub>f</sub>G<sup>0</sup></a> (kJ·mol<sup>−1</sup>)</th><td>−379,7 </td></tr><tr><th><a href="/wiki/Entropia_molare_standard" title="Entropia molare standard">S<sup>0</sup><sub>m</sub></a>(J·K<sup>−1</sup>mol<sup>−1</sup>)</th><td>64,4 </td></tr><tr><th><a href="/wiki/Capacit%C3%A0_termica" title="Capacità termica">C<sup>0</sup><sub>p,m</sub></a>(J·K<sup>−1</sup>mol<sup>−1</sup>)</th><td>59,5 </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#AAEEFF;">Proprietà tossicologiche</th></tr><tr><th><a href="/wiki/DL50" title="DL50">DL<sub>50</sub></a> (mg/kg)</th><td>500 </td></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#AAEEFF;">Indicazioni di sicurezza</th></tr><tr class="sinottico_divisione"><th colspan="2" style="background-color:#DDEEFF; font-weight:normal;"><a href="/wiki/Simboli_di_rischio_chimico" title="Simboli di rischio chimico">Simboli di rischio chimico</a></th></tr><tr><td class="sinottico_testo_centrale" colspan="2"><span typeof="mw:File"><a href="/wiki/File:GHS-pictogram-acid.svg" class="mw-file-description" title="corrosivo"><img alt="corrosivo" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/50px-GHS-pictogram-acid.svg.png" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/75px-GHS-pictogram-acid.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a1/GHS-pictogram-acid.svg/100px-GHS-pictogram-acid.svg.png 2x" data-file-width="724" data-file-height="724" /></a></span>  </td></tr><tr><td class="sinottico_testo_centrale" colspan="2">pericolo </td></tr><tr><th><a href="/wiki/Frasi_H" class="mw-redirect" title="Frasi H">Frasi H</a></th><td><abbr title="Provoca gravi ustioni cutanee e gravi lesioni oculari.">314 </abbr>- <abbr title="Può essere corrosivo per i metalli.">290 </abbr> </td></tr><tr><th><a href="/wiki/Consigli_P" title="Consigli P">Consigli P</a></th><td><abbr title="Indossare guanti / indumenti protettivi / Proteggere gli occhi / il viso.">280 </abbr>- <abbr title="In caso di ingestione: sciacquare la bocca. NON provocare il vomito.">301+330+331 </abbr>- <abbr title="In caso di contatto con gli occhi: sciacquare accuratamente per parecchi minuti. Togliere le eventuali lenti a contatto se è agevole farlo. Continuare a sciacquare.">305+351+338 </abbr>- <abbr title="Contattare immediatamente un centro antiveleni o un medico.">310 </abbr><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr><tr><td class="sinottico_piede2 noprint nomobile metadata" colspan="2"><a href="https://www.wikidata.org/wiki/Q102769" class="extiw" title="d:Q102769"><span title="Modifica i dati della voce Idrossido di sodio su Wikidata">Modifica dati su Wikidata</span></a><b> ·</b> <a href="/wiki/Template:Composto_chimico/man" title="Template:Composto chimico/man"><span title="Manuale del template Composto chimico">Manuale</span></a></td></tr></tbody></table> <p>L'<b>idrossido di sodio</b>, talvolta denominato impropriamente <b>idrato di sodio</b><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> e commercialmente noto come <b>soda caustica</b>, è una <a href="/wiki/Base_(chimica)" title="Base (chimica)">base</a> minerale forte, solido a temperatura ambiente, estremamente <a href="/wiki/Igroscopico" class="mw-redirect" title="Igroscopico">igroscopico</a> e <a href="/wiki/Deliquescenza" title="Deliquescenza">deliquescente</a>, spesso venduto in forma di gocce biancastre dette perle, pasticche o perline; la sua <a href="/wiki/Formula_chimica" title="Formula chimica">formula chimica</a> è <a href="/wiki/Sodio" title="Sodio">Na</a><a href="/wiki/Ossigeno" title="Ossigeno">O</a><a href="/wiki/Idrogeno" title="Idrogeno">H</a>. </p><p>Una soluzione di 40 g/l in acqua a 20 °C ha <a href="/wiki/PH" title="PH">pH</a> di circa 14. È molto <a href="/wiki/Solubilit%C3%A0" title="Solubilità">solubile</a> in <a href="/wiki/Acqua" title="Acqua">acqua</a> (oltre 1 kg per litro a 20 °C) ed abbastanza solubile in <a href="/wiki/Etanolo" title="Etanolo">etanolo</a> (139 g/l). La sua dissoluzione è accompagnata da un consistente sviluppo di <a href="/wiki/Calore" title="Calore">calore</a>; nel caso dell'etanolo o di altri solventi organici, tale calore può persino far infiammare i vapori del solvente. </p><p>Viene conservato in recipienti sigillati perché <a href="/wiki/Igroscopia" title="Igroscopia">igroscopico</a> (tende ad assorbire l'umidità dell'aria) e perché reagisce facilmente con l'anidride carbonica dell'aria trasformandosi in <a href="/wiki/Bicarbonato_di_sodio" title="Bicarbonato di sodio">idrogenocarbonato di sodio</a> e <a href="/wiki/Carbonato_di_sodio" title="Carbonato di sodio">carbonato di sodio</a>; il fenomeno prende il nome di <i><a href="/wiki/Carbonatazione" title="Carbonatazione">carbonatazione</a></i>. L'idrossido di sodio si ottiene principalmente per <a href="/wiki/Elettrolisi" title="Elettrolisi">elettrolisi</a> delle salamoie (soluzioni di cloruro di sodio) insieme all'<a href="/wiki/Idrogeno" title="Idrogeno">idrogeno</a> ed al <a href="/wiki/Cloro" title="Cloro">cloro</a> gassosi. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Utilizzi">Utilizzi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=1" title="Modifica la sezione Utilizzi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=1" title="Edit section's source code: Utilizzi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div style="float:right;margin-top:-6px; margin-left: 6px"><figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Paint_stripping_with_caustic_soda.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/78/Paint_stripping_with_caustic_soda.jpg/220px-Paint_stripping_with_caustic_soda.jpg" decoding="async" width="220" height="331" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/78/Paint_stripping_with_caustic_soda.jpg/330px-Paint_stripping_with_caustic_soda.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/78/Paint_stripping_with_caustic_soda.jpg/440px-Paint_stripping_with_caustic_soda.jpg 2x" data-file-width="2016" data-file-height="3032" /></a><figcaption>Parziale sverniciatura di una vecchia porta in legno con una soluzione acquosa di idrossido di sodio.</figcaption></figure></div> <p>Nell'industria chimica, è un reagente di ampio impiego; è utilizzato nella sintesi di <a href="/wiki/Colorante" title="Colorante">coloranti</a>, <a href="/wiki/Detergente" title="Detergente">detergenti</a> e <a href="/wiki/Sapone" title="Sapone">saponi</a>, nella fabbricazione della <a href="/wiki/Carta" title="Carta">carta</a> e nel trattamento delle fibre del <a href="/wiki/Cotone_(fibra)" title="Cotone (fibra)">cotone</a>, nonché nella produzione dell'<a href="/wiki/Ipoclorito_di_sodio" title="Ipoclorito di sodio">ipoclorito di sodio</a> (la comune candeggina) e di altri sali sodici, quali il fosfato ed il solfuro. </p><p>La soluzione alcolica viene adoperata in campo di sintesi organica, in quelle reazioni in cui essa sia richiesta, ma si necessita della totale assenza di acqua sia come liquido che come vapore nell'aria. Queste sono reazioni dette comunemente "anidre" o meglio "dry", generalmente condotte in atmosfera di gas inerte come l'azoto. Viene altresì usato per rigenerare le <a href="/wiki/Resina_a_scambio_ionico" title="Resina a scambio ionico">resine a scambio ionico</a> utilizzate per la <a href="/wiki/Demineralizzazione" title="Demineralizzazione">demineralizzazione</a> dell'acqua. </p><p>A livello domestico trova uso sotto forma di <a href="/wiki/Soluzione_acquosa" title="Soluzione acquosa">soluzione acquosa</a> nei prodotti per disciogliere i grumi di prodotti organici che a volte otturano gli scarichi dei lavelli; va comunque maneggiato con una certa cautela, dato che provoca ustioni per contatto con la pelle e cecità per contatto con gli occhi. Serve anche, opportunamente diluito con acqua non dura e miscelato con grassi animali o vegetali, per preparare saponi artigianali. </p><p>Viene inoltre utilizzato nella preparazione di un tipico piatto scandinavo, il <a href="/wiki/Lutefisk" title="Lutefisk">lutefisk</a>, e nella preparazione industriale dei <a href="/wiki/Brezel" title="Brezel">brezel</a>. Tra gli additivi alimentari è identificato dalla sigla <a href="/wiki/Additivo_alimentare" title="Additivo alimentare">E 524</a>. </p><p>Nel settore enologico viene adoperata per la pulizia interna delle cisterne con residui di tartaro, mediante apposite pompe dotate di particolari getti. Risulta anche molto efficace per rimuovere residui oleosi e il cattivo odore da tanichette di plastica o di <a href="/wiki/Acciaio" title="Acciaio">acciaio</a> inox. </p><p>È molto usato inoltre in <a href="/wiki/Elettronica" title="Elettronica">elettronica</a> per la produzione di <a href="/wiki/Circuito_stampato" title="Circuito stampato">circuiti stampati</a> mediante la <a href="/wiki/Fotoincisione" title="Fotoincisione">fotoincisione</a>; è indispensabile per rimuovere il <a href="/wiki/Fotoresist" title="Fotoresist">fotoresist</a> impressionato dai <a href="/wiki/Radiazione_ultravioletta" title="Radiazione ultravioletta">raggi UV</a>, in concentrazione di 7 kg/m³. </p><p>Viene utilizzato anche in bagni termostatici per lo sviluppo delle pellicole di <a href="/wiki/Nitrocellulosa" title="Nitrocellulosa">nitrocellulosa</a> LR 115, usate per la misurazione della concentrazione di gas <a href="/wiki/Radon" title="Radon">radon</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Precauzioni">Precauzioni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=2" title="Modifica la sezione Precauzioni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=2" title="Edit section's source code: Precauzioni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sodium_hydroxide_burn.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Sodium_hydroxide_burn.png/220px-Sodium_hydroxide_burn.png" decoding="async" width="220" height="277" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/09/Sodium_hydroxide_burn.png/330px-Sodium_hydroxide_burn.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/09/Sodium_hydroxide_burn.png/440px-Sodium_hydroxide_burn.png 2x" data-file-width="1166" data-file-height="1466" /></a><figcaption>Ustione da soda caustica</figcaption></figure> <p>L'idrossido di sodio possiede una notevole capacità corrosiva. Il solo contatto del composto <a href="/wiki/Solido" title="Solido">solido</a> con la <a href="/wiki/Pelle" title="Pelle">pelle</a> non causa gravissime ustioni, ma è tassativo maneggiarlo con guanti ed occhiali protettivi. Inoltre, il contatto del composto durante la sua reazione con l'acqua può essere molto dannoso. </p><p>La sua dissoluzione in acqua è una reazione fortemente esotermica, libera cioè molto <a href="/wiki/Calore" title="Calore">calore</a>. </p> <table class="wikitable"> <caption>Densità delle soluzioni acquose </caption> <tbody><tr> <th><a href="/wiki/Frazione_massica" title="Frazione massica">Frazione<br />massica</a> </th> <th><a href="/wiki/Molarit%C3%A0" class="mw-redirect" title="Molarità">Concentrazione<br />molare</a> </th> <th><a href="/wiki/Densit%C3%A0" title="Densità">Densità</a> </th></tr> <tr> <td>0,00159</td> <td>0,040 kmol/m<sup>3</sup></td> <td>1000 kg/m<sup>3</sup> </td></tr> <tr> <td>0,04655</td> <td>1,222 kmol/m<sup>3</sup></td> <td>1050 kg/m<sup>3</sup> </td></tr> <tr> <td>0,0919</td> <td>2,527 kmol/m<sup>3</sup></td> <td>1100 kg/m<sup>3</sup> </td></tr> <tr> <td>0,1373</td> <td>3,947 kmol/m<sup>3</sup></td> <td>1150 kg/m<sup>3</sup> </td></tr> <tr> <td>0,1825</td> <td>5,476 kmol/m<sup>3</sup></td> <td>1200 kg/m<sup>3</sup> </td></tr> <tr> <td>0,2282</td> <td>7,129 kmol/m<sup>3</sup></td> <td>1250 kg/m<sup>3</sup> </td></tr> <tr> <td>0,2741</td> <td>8,906 kmol/m<sup>3</sup></td> <td>1300 kg/m<sup>3</sup> </td></tr> <tr> <td>0,3210</td> <td>10,83 kmol/m<sup>3</sup></td> <td>1350 kg/m<sup>3</sup> </td></tr> <tr> <td>0,3699</td> <td>12,95 kmol/m<sup>3</sup></td> <td>1400 kg/m<sup>3</sup> </td></tr> <tr> <td>0,4207</td> <td>15,25 kmol/m<sup>3</sup></td> <td>1450 kg/m<sup>3</sup> </td></tr> <tr> <td>0,4733</td> <td>17,75 kmol/m<sup>3</sup></td> <td>1500 kg/m<sup>3</sup> </td></tr> </tbody></table> <div class="mw-heading mw-heading2"><h2 id="Sintesi">Sintesi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=3" title="Modifica la sezione Sintesi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=3" title="Edit section's source code: Sintesi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>L'idrossido di sodio è facilmente sintetizzabile quando, con una reazione di scambio semplice, il sodio viene a contatto con <a href="/wiki/Acqua" title="Acqua">l'acqua</a>, liberando anche <a href="/wiki/Idrogeno" title="Idrogeno">idrogeno gassoso</a> e cambiando aspetto quasi istantaneamente, divenendo appunto NaOH. </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {2Na +2 H2O-> 2NaOH +H2}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> <mspace width="thinmathspace" /> <mtext>Na</mtext> <mo>+</mo> <mn>2</mn> <mspace width="thinmathspace" /> <msubsup> <mtext>H</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mtext>O</mtext> <mo stretchy="false">⟶</mo> <mn>2</mn> <mspace width="thinmathspace" /> <mtext>NaOH</mtext> <mo>+</mo> <msubsup> <mtext>H</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\ce {2Na +2 H2O-> 2NaOH +H2}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6e5e5e518a31d2918dae937dce0db08e27307196" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:32.191ex; height:2.843ex;" alt="{\displaystyle {\ce {2Na +2 H2O-> 2NaOH +H2}}}"></span> </p><p>Il processo avviene anche tra l'<a href="/wiki/Ossido_di_sodio" title="Ossido di sodio">ossido di sodio</a> e l'<a href="/wiki/Acqua" title="Acqua">acqua</a>, che accade però con una reazione di <a href="/wiki/Sintesi_chimica" title="Sintesi chimica">combinazione</a> </p><p><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\ce {Na2O + H2O -> 2NaOH}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msubsup> <mtext>Na</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mtext>O</mtext> <mo>+</mo> <msubsup> <mtext>H</mtext> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mspace width="0pt" height="0pt" depth=".2em" /> </mrow> </msubsup> <mtext>O</mtext> <mo stretchy="false">⟶</mo> <mn>2</mn> <mspace width="thinmathspace" /> <mtext>NaOH</mtext> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\ce {Na2O + H2O -> 2NaOH}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/55bc3058f5af9836ccf96e6da7b235ad2203f9eb" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -1.005ex; width:26.316ex; height:2.843ex;" alt="{\displaystyle {\ce {Na2O + H2O -> 2NaOH}}}"></span> </p><p><i>Nota bene : Esperimento potenzialmente pericoloso, non riprodurre senza le dovute precauzioni</i> </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=4" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=4" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1"><b>^</b></a> <span class="reference-text">scheda dell'idrossido di sodio su <a rel="nofollow" class="external text" href="http://gestis-en.itrust.de">IFA-GESTIS</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20191016183546/http://gestis-en.itrust.de/">Archiviato</a> il 16 ottobre 2019 in <a href="/wiki/Internet_Archive" title="Internet Archive">Internet Archive</a>.</span> </li> <li id="cite_note-2"><a href="#cite_ref-2"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://www.iupac.org/publications/books/rbook/Red_Book_2005.pdf"><span style="font-style:italic;">IUPAC RED Book, definizione di sale "idrato", pp. 80-81</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), su <span style="font-style:italic;">iupac.org</span>. <small>URL consultato il 10 giugno 2014</small> <small>(<a rel="nofollow" class="external text" href="https://web.archive.org/web/20080527204340/http://www.iupac.org/publications/books/rbook/Red_Book_2005.pdf">archiviato</a> il 27 maggio 2008)</small>.</cite></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Voci_correlate">Voci correlate</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=5" title="Modifica la sezione Voci correlate" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=5" title="Edit section's source code: Voci correlate"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Idrossido_di_potassio" title="Idrossido di potassio">Idrossido di potassio</a></li> <li><a href="/wiki/Idrossido_di_rubidio" title="Idrossido di rubidio">Idrossido di rubidio</a></li> <li><a href="/wiki/Processo_cloro-soda" title="Processo cloro-soda">Processo cloro-soda</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Altri_progetti">Altri progetti</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=6" title="Modifica la sezione Altri progetti" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=6" title="Edit section's source code: Altri progetti"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div id="interProject" class="toccolours" style="display: none; clear: both; margin-top: 2em"><p id="sisterProjects" style="background-color: #efefef; color: black; font-weight: bold; margin: 0"><span>Altri progetti</span></p><ul title="Collegamenti verso gli altri progetti Wikimedia"> <li class="" title=""><span class="plainlinks" title="commons:Category:Sodium hydroxide"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Sodium_hydroxide?uselang=it">Wikimedia Commons</a></span></li></ul></div> <ul><li><span typeof="mw:File"><a href="https://commons.wikimedia.org/wiki/?uselang=it" title="Collabora a Wikimedia Commons"><img alt="Collabora a Wikimedia Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png" decoding="async" width="18" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/27px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/36px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span> <span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/?uselang=it">Wikimedia Commons</a></span> contiene immagini o altri file sull'<b><span class="plainlinks"><a class="external text" href="https://commons.wikimedia.org/wiki/Category:Sodium_hydroxide?uselang=it">Idrossido di sodio</a></span></b></li></ul> <div class="mw-heading mw-heading2"><h2 id="Collegamenti_esterni">Collegamenti esterni</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Idrossido_di_sodio&veaction=edit&section=7" title="Modifica la sezione Collegamenti esterni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Idrossido_di_sodio&action=edit&section=7" title="Edit section's source code: Collegamenti esterni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li class="mw-empty-elt"></li> <li><cite id="CITEREFBritannica.com" class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.britannica.com/science/sodium-hydroxide"><span style="font-style:italic;">sodium hydroxide</span></a>, su <span style="font-style:italic;"><a href="/wiki/Enciclopedia_Britannica" title="Enciclopedia Britannica">Enciclopedia Britannica</a></span>, Encyclopædia Britannica, Inc.</cite> <span class="mw-valign-text-top noprint" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q102769#P1417" title="Modifica su Wikidata"><img alt="Modifica su Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/10px-Blue_pencil.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/20px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></li> <li><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="http://www.itchiavari.org/chimica/lab/prepnaoh.html"><span style="font-style:italic;">Preparazione dell'idrossido di sodio per "caustificazione del carbonato"</span></a>, su <span style="font-style:italic;">itchiavari.org</span>.</cite></li></ul> <style data-mw-deduplicate="TemplateStyles:r141815314">.mw-parser-output .navbox{border:1px solid #aaa;clear:both;margin:auto;padding:2px;width:100%}.mw-parser-output .navbox th{padding-left:1em;padding-right:1em;text-align:center}.mw-parser-output .navbox>tbody>tr:first-child>th{background:#ccf;font-size:90%;width:100%;color:var(--color-base,black)}.mw-parser-output .navbox_navbar{float:left;margin:0;padding:0 10px 0 0;text-align:left;width:6em}.mw-parser-output .navbox_title{font-size:110%}.mw-parser-output .navbox_abovebelow{background:#ddf;font-size:90%;font-weight:normal}.mw-parser-output .navbox_group{background:#ddf;font-size:90%;padding:0 10px;white-space:nowrap}.mw-parser-output .navbox_list{font-size:90%;width:100%}.mw-parser-output .navbox_list a{white-space:nowrap}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_odd{background:#fdfdfd;color:var(--color-base,black)}html:not(.vector-feature-night-mode-enabled) .mw-parser-output .navbox_even{background:#f7f7f7;color:var(--color-base,black)}.mw-parser-output .navbox a.mw-selflink{color:var(--color-base,black)}.mw-parser-output .navbox_center{text-align:center}.mw-parser-output .navbox .navbox_image{padding-left:7px;vertical-align:middle;width:0}.mw-parser-output .navbox+.navbox{margin-top:-1px}.mw-parser-output .navbox .mw-collapsible-toggle{font-weight:normal;text-align:right;width:7em}body.skin--responsive .mw-parser-output .navbox_image img{max-width:none!important}.mw-parser-output .subnavbox{margin:-3px;width:100%}.mw-parser-output .subnavbox_group{background:#e6e6ff;padding:0 10px}@media screen{html.skin-theme-clientpref-night .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-night .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-night .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-night .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbox>tbody>tr:first-child>th{background:var(--background-color-interactive)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox th{color:var(--color-base)!important}html.skin-theme-clientpref-os .mw-parser-output .navbox_abovebelow,html.skin-theme-clientpref-os .mw-parser-output .navbox_group{background:var(--background-color-interactive-subtle)!important}html.skin-theme-clientpref-os .mw-parser-output .subnavbox_group{background:var(--background-color-neutral-subtle)!important}}</style><table class="navbox mw-collapsible mw-collapsed noprint metadata" id="navbox-Idrossidi"><tbody><tr><th colspan="2"><div class="navbox_navbar"><div class="noprint plainlinks" style="background-color:transparent; 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href="/w/index.php?title=Idrossido_di_stagno(II)&action=edit&redlink=1" class="new" title="Idrossido di stagno(II) (la pagina non esiste)">Idrossido di stagno(II)</a><b> ·</b> <a href="/wiki/Idrossido_di_stronzio" title="Idrossido di stronzio">Idrossido di stronzio</a><b> ·</b> <a href="/wiki/Idrossido_di_zinco" title="Idrossido di zinco">Idrossido di zinco</a></td></tr><tr><th colspan="1" class="navbox_group">Triidrossidi</th><td colspan="1" class="navbox_list navbox_odd"><a href="/wiki/Idrossido_di_alluminio" title="Idrossido di alluminio">Idrossido di alluminio</a><b> ·</b> <a href="/w/index.php?title=Idrossido_di_boro&action=edit&redlink=1" class="new" title="Idrossido di boro (la pagina non esiste)">Idrossido di boro</a><b> ·</b> <a href="/wiki/Idrossido_ferrico" title="Idrossido ferrico">Idrossido ferrico</a><b> ·</b> <a href="/w/index.php?title=Idrossido_di_gallio(III)&action=edit&redlink=1" class="new" title="Idrossido di gallio(III) (la pagina non esiste)">Idrossido di 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