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</ul> </li> <li id="toc-Vidro" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Vidro"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.2</span> <span>Vidro</span> </div> </a> <ul id="toc-Vidro-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Outros" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Outros"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.3</span> <span>Outros</span> </div> </a> <ul id="toc-Outros-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Efeitos_na_saúde" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Efeitos_na_saúde"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Efeitos na saúde</span> </div> </a> <ul id="toc-Efeitos_na_saúde-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referências" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referências"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Referências</span> </div> </a> <ul id="toc-Referências-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="Conteúdo" 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="Alternar o índice" > <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">Alternar o índice</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">Dióxido de silício</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="Ir para um artigo noutra língua. Disponível em 75 línguas" > <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-75" 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">75 línguas</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/Silikondioksied" title="Silikondioksied — africanês" lang="af" hreflang="af" data-title="Silikondioksied" data-language-autonym="Afrikaans" data-language-local-name="africanês" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Silica" title="Silica — aragonês" lang="an" hreflang="an" data-title="Silica" data-language-autonym="Aragonés" data-language-local-name="aragonês" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AB%D9%86%D8%A7%D8%A6%D9%8A_%D8%A3%D9%83%D8%B3%D9%8A%D8%AF_%D8%A7%D9%84%D8%B3%D9%8A%D9%84%D9%8A%D9%83%D9%88%D9%86" title="ثنائي أكسيد السيليكون — árabe" lang="ar" hreflang="ar" data-title="ثنائي أكسيد السيليكون" data-language-autonym="العربية" data-language-local-name="árabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Kremni_oksidi(IV)" title="Kremni oksidi(IV) — azerbaijano" lang="az" hreflang="az" data-title="Kremni oksidi(IV)" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaijano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%B3%DB%8C%D9%84%DB%8C%D8%B3%DB%8C%D9%88%D9%85_%D8%AF%DB%8C%E2%80%8C%D8%A7%D9%88%DA%A9%D8%B3%DB%8C%D8%AF" title="سیلیسیوم دی‌اوکسید — South Azerbaijani" lang="azb" hreflang="azb" data-title="سیلیسیوم دی‌اوکسید" 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%A1%D0%B8%D0%BB%D0%B8%D1%86%D0%B8%D0%B5%D0%B2_%D0%B4%D0%B8%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Силициев диоксид — búlgaro" lang="bg" hreflang="bg" data-title="Силициев диоксид" data-language-autonym="Български" data-language-local-name="búlgaro" 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%A6%BF%E0%A6%B2%E0%A6%BF%E0%A6%95%E0%A6%A8_%E0%A6%A1%E0%A6%BE%E0%A6%87_%E0%A6%85%E0%A6%95%E0%A7%8D%E0%A6%B8%E0%A6%BE%E0%A6%87%E0%A6%A1" title="সিলিকন ডাই অক্সাইড — bengalês" lang="bn" hreflang="bn" data-title="সিলিকন ডাই অক্সাইড" data-language-autonym="বাংলা" data-language-local-name="bengalês" 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/Silicij-dioksid" title="Silicij-dioksid — bósnio" lang="bs" hreflang="bs" data-title="Silicij-dioksid" data-language-autonym="Bosanski" data-language-local-name="bósnio" 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/Di%C3%B2xid_de_silici" title="Diòxid de silici — catalão" lang="ca" hreflang="ca" data-title="Diòxid de silici" data-language-autonym="Català" data-language-local-name="catalão" 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/Oxid_k%C5%99emi%C4%8Dit%C3%BD" title="Oxid křemičitý — checo" lang="cs" hreflang="cs" data-title="Oxid křemičitý" data-language-autonym="Čeština" data-language-local-name="checo" 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%9A%D1%80%D0%B5%D0%BC%D0%BD%D0%B8%D0%B9_%D1%82%C4%83%D0%BF%D1%80%D0%B0%D0%B2%C4%95" title="Кремний тăправĕ — chuvash" lang="cv" hreflang="cv" data-title="Кремний тăправĕ" data-language-autonym="Чӑвашла" data-language-local-name="chuvash" 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/Siliciumdioxid" title="Siliciumdioxid — dinamarquês" lang="da" hreflang="da" data-title="Siliciumdioxid" data-language-autonym="Dansk" data-language-local-name="dinamarquês" 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/Siliciumdioxid" title="Siliciumdioxid — alemão" lang="de" hreflang="de" data-title="Siliciumdioxid" data-language-autonym="Deutsch" data-language-local-name="alemão" 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%94%CE%B9%CE%BF%CE%BE%CE%B5%CE%AF%CE%B4%CE%B9%CE%BF_%CF%84%CE%BF%CF%85_%CF%80%CF%85%CF%81%CE%B9%CF%84%CE%AF%CE%BF%CF%85" title="Διοξείδιο του πυριτίου — grego" lang="el" hreflang="el" data-title="Διοξείδιο του πυριτίου" data-language-autonym="Ελληνικά" data-language-local-name="grego" 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/Silicon_dioxide" title="Silicon dioxide — inglês" lang="en" hreflang="en" data-title="Silicon dioxide" data-language-autonym="English" data-language-local-name="inglês" 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/Silicia_dioksido" title="Silicia dioksido — esperanto" lang="eo" hreflang="eo" data-title="Silicia dioksido" 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/%C3%93xido_de_silicio(IV)" title="Óxido de silicio(IV) — espanhol" lang="es" hreflang="es" data-title="Óxido de silicio(IV)" data-language-autonym="Español" data-language-local-name="espanhol" 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/R%C3%A4nidioksiid" title="Ränidioksiid — estónio" lang="et" hreflang="et" data-title="Ränidioksiid" data-language-autonym="Eesti" data-language-local-name="estónio" 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/Silizio_dioxido" title="Silizio dioxido — basco" lang="eu" hreflang="eu" data-title="Silizio dioxido" 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%DB%8C%D9%84%DB%8C%D8%B3%DB%8C%D9%85_%D8%AF%DB%8C%E2%80%8C%D8%A7%DA%A9%D8%B3%DB%8C%D8%AF" title="سیلیسیم دی‌اکسید — persa" lang="fa" hreflang="fa" data-title="سیلیسیم دی‌اکسید" data-language-autonym="فارسی" data-language-local-name="persa" 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/Piidioksidi" title="Piidioksidi — finlandês" lang="fi" hreflang="fi" data-title="Piidioksidi" data-language-autonym="Suomi" data-language-local-name="finlandês" 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/Dioxyde_de_silicium" title="Dioxyde de silicium — francês" lang="fr" hreflang="fr" data-title="Dioxyde de silicium" data-language-autonym="Français" data-language-local-name="francês" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Silice" title="Silice — irlandês" lang="ga" hreflang="ga" data-title="Silice" data-language-autonym="Gaeilge" data-language-local-name="irlandês" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Silicon_dioxide" title="Silicon dioxide — haúça" lang="ha" hreflang="ha" data-title="Silicon dioxide" data-language-autonym="Hausa" data-language-local-name="haúça" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A6%D7%95%D7%A8%D7%9F_%D7%93%D7%95-%D7%97%D7%9E%D7%A6%D7%A0%D7%99" title="צורן דו-חמצני — hebraico" lang="he" hreflang="he" data-title="צורן דו-חמצני" data-language-autonym="עברית" data-language-local-name="hebraico" 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%A4%BF%E0%A4%B2%E0%A4%BF%E0%A4%95%E0%A4%BE" title="सिलिका — hindi" lang="hi" hreflang="hi" data-title="सिलिका" 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/Silicijev_dioksid" title="Silicijev dioksid — croata" lang="hr" hreflang="hr" data-title="Silicijev dioksid" data-language-autonym="Hrvatski" data-language-local-name="croata" 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/Szil%C3%ADcium-dioxid" title="Szilícium-dioxid — húngaro" lang="hu" hreflang="hu" data-title="Szilícium-dioxid" data-language-autonym="Magyar" data-language-local-name="húngaro" 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%8D%D5%AB%D5%AC%D5%AB%D6%81%D5%AB%D5%B8%D6%82%D5%B4%D5%AB_%D5%A5%D6%80%D5%AF%D6%85%D6%84%D5%BD%D5%AB%D5%A4" title="Սիլիցիումի երկօքսիդ — arménio" lang="hy" hreflang="hy" data-title="Սիլիցիումի երկօքսիդ" data-language-autonym="Հայերեն" data-language-local-name="arménio" 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/Silikon_dioksida" title="Silikon dioksida — indonésio" lang="id" hreflang="id" data-title="Silikon dioksida" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésio" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Silico" title="Silico — ido" lang="io" hreflang="io" data-title="Silico" data-language-autonym="Ido" data-language-local-name="ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Silice" title="Silice — italiano" lang="it" hreflang="it" data-title="Silice" data-language-autonym="Italiano" data-language-local-name="italiano" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E4%BA%8C%E9%85%B8%E5%8C%96%E3%82%B1%E3%82%A4%E7%B4%A0" title="二酸化ケイ素 — japonês" lang="ja" hreflang="ja" data-title="二酸化ケイ素" data-language-autonym="日本語" data-language-local-name="japonês" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%9A%D1%80%D0%B5%D0%BC%D0%BD%D0%B8%D0%B9_%D0%BE%D0%BA%D1%81%D0%B8%D0%B4%D1%96_(IV)" title="Кремний оксиді (IV) — cazaque" lang="kk" hreflang="kk" data-title="Кремний оксиді (IV)" data-language-autonym="Қазақша" data-language-local-name="cazaque" 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%9D%B4%EC%82%B0%ED%99%94_%EA%B7%9C%EC%86%8C" title="이산화 규소 — coreano" lang="ko" hreflang="ko" data-title="이산화 규소" 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%9A%D1%80%D0%B5%D0%BC%D0%BD%D0%B8%D0%B9_%D0%BA%D0%BE%D1%88_%D0%BE%D0%BA%D1%81%D0%B8%D0%B4%D0%B8" title="Кремний кош оксиди — quirguiz" lang="ky" hreflang="ky" data-title="Кремний кош оксиди" data-language-autonym="Кыргызча" data-language-local-name="quirguiz" 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/Oxidum_silicii" title="Oxidum silicii — latim" lang="la" hreflang="la" data-title="Oxidum silicii" data-language-autonym="Latina" data-language-local-name="latim" 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/Silicio_dioksidas" title="Silicio dioksidas — lituano" lang="lt" hreflang="lt" data-title="Silicio dioksidas" 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/Sil%C4%ABcija_dioks%C4%ABds" title="Silīcija dioksīds — letão" lang="lv" hreflang="lv" data-title="Silīcija dioksīds" data-language-autonym="Latviešu" data-language-local-name="letão" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Silisy" title="Silisy — malgaxe" lang="mg" hreflang="mg" data-title="Silisy" data-language-autonym="Malagasy" data-language-local-name="malgaxe" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D0%B8%D0%BB%D0%B8%D1%86%D0%B8%D1%83%D0%BC_%D0%B4%D0%B8%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Силициум диоксид — macedónio" lang="mk" hreflang="mk" data-title="Силициум диоксид" data-language-autonym="Македонски" data-language-local-name="macedónio" 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%B4%BF%E0%B4%B2%E0%B4%BF%E0%B4%95%E0%B5%8D%E0%B4%95" title="സിലിക്ക — malaiala" lang="ml" hreflang="ml" data-title="സിലിക്ക" data-language-autonym="മലയാളം" data-language-local-name="malaiala" 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%A6%D0%B0%D1%85%D0%B8%D1%83%D1%80%D1%8B%D0%BD_%D0%B4%D0%B0%D0%B2%D1%85%D0%B0%D1%80_%D0%B8%D1%81%D1%8D%D0%BB" title="Цахиурын давхар исэл — mongol" lang="mn" hreflang="mn" data-title="Цахиурын давхар исэл" data-language-autonym="Монгол" data-language-local-name="mongol" 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/Silikon_dioksida" title="Silikon dioksida — malaio" lang="ms" hreflang="ms" data-title="Silikon dioksida" data-language-autonym="Bahasa Melayu" data-language-local-name="malaio" 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%80%E1%80%BB%E1%80%B1%E1%80%AC%E1%80%80%E1%80%BA%E1%80%9E%E1%80%9C%E1%80%84%E1%80%BA%E1%80%B8" title="ကျောက်သလင်း — birmanês" lang="my" hreflang="my" data-title="ကျောက်သလင်း" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmanês" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Siliciumdioxide" title="Siliciumdioxide — neerlandês" lang="nl" hreflang="nl" data-title="Siliciumdioxide" data-language-autonym="Nederlands" data-language-local-name="neerlandês" 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/Silika" title="Silika — norueguês nynorsk" lang="nn" hreflang="nn" data-title="Silika" data-language-autonym="Norsk nynorsk" data-language-local-name="norueguês 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/Silisiumdioksid" title="Silisiumdioksid — norueguês bokmål" lang="nb" hreflang="nb" data-title="Silisiumdioksid" data-language-autonym="Norsk bokmål" data-language-local-name="norueguês bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B8%E0%A8%BF%E0%A8%B2%E0%A9%80%E0%A8%95%E0%A8%BE%E0%A8%A8_%E0%A8%A1%E0%A8%BE%E0%A8%88%E0%A8%86%E0%A8%95%E0%A8%B8%E0%A8%BE%E0%A8%88%E0%A8%A1" title="ਸਿਲੀਕਾਨ ਡਾਈਆਕਸਾਈਡ — panjabi" lang="pa" hreflang="pa" data-title="ਸਿਲੀਕਾਨ ਡਾਈਆਕਸਾਈਡ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="panjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Ditlenek_krzemu" title="Ditlenek krzemu — polaco" lang="pl" hreflang="pl" data-title="Ditlenek krzemu" data-language-autonym="Polski" data-language-local-name="polaco" 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/%D8%B3%D9%84%DB%8C%DA%A9%D8%A7%D9%86_%DA%88%D8%A7%D8%A6%DB%8C_%D8%A2%DA%A9%D8%B3%D8%A7%D8%A6%DB%8C%DA%88" title="سلیکان ڈائی آکسائیڈ — Western Punjabi" lang="pnb" hreflang="pnb" data-title="سلیکان ڈائی آکسائیڈ" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%B3%D9%84%D9%8A%D9%83%D8%A7%D9%86_%DA%89%D8%A7%DB%8C_%D8%A7%DA%A9%D8%B3%D8%A7%D9%8A%DA%89" title="سليكان ډای اکسايډ — pastó" lang="ps" hreflang="ps" data-title="سليكان ډای اکسايډ" data-language-autonym="پښتو" data-language-local-name="pastó" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Ullaya" title="Ullaya — quíchua" lang="qu" hreflang="qu" data-title="Ullaya" data-language-autonym="Runa Simi" data-language-local-name="quíchua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Dioxid_de_siliciu" title="Dioxid de siliciu — romeno" lang="ro" hreflang="ro" data-title="Dioxid de siliciu" data-language-autonym="Română" data-language-local-name="romeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%94%D0%B8%D0%BE%D0%BA%D1%81%D0%B8%D0%B4_%D0%BA%D1%80%D0%B5%D0%BC%D0%BD%D0%B8%D1%8F" title="Диоксид кремния — russo" lang="ru" hreflang="ru" data-title="Диоксид кремния" 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/Silicon_dioxide" title="Silicon dioxide — scots" lang="sco" hreflang="sco" data-title="Silicon dioxide" data-language-autonym="Scots" data-language-local-name="scots" 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/Silicijum_dioksid" title="Silicijum dioksid — servo-croata" lang="sh" hreflang="sh" data-title="Silicijum dioksid" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="servo-croata" 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/Silicon_dioxide" title="Silicon dioxide — Simple English" lang="en-simple" hreflang="en-simple" data-title="Silicon dioxide" 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/Oxid_kremi%C4%8Dit%C3%BD" title="Oxid kremičitý — eslovaco" lang="sk" hreflang="sk" data-title="Oxid kremičitý" data-language-autonym="Slovenčina" data-language-local-name="eslovaco" 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/Silicijev_dioksid" title="Silicijev dioksid — esloveno" lang="sl" hreflang="sl" data-title="Silicijev dioksid" data-language-autonym="Slovenščina" data-language-local-name="esloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%B8%D0%BB%D0%B8%D1%86%D0%B8%D1%98%D1%83%D0%BC-%D0%B4%D0%B8%D0%BE%D0%BA%D1%81%D0%B8%D0%B4" title="Силицијум-диоксид — sérvio" lang="sr" hreflang="sr" data-title="Силицијум-диоксид" data-language-autonym="Српски / srpski" data-language-local-name="sérvio" 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/Kiseldioxid" title="Kiseldioxid — sueco" lang="sv" hreflang="sv" data-title="Kiseldioxid" data-language-autonym="Svenska" data-language-local-name="sueco" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Silika_(kemia)" title="Silika (kemia) — suaíli" lang="sw" hreflang="sw" data-title="Silika (kemia)" data-language-autonym="Kiswahili" data-language-local-name="suaíli" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%9A%E0%AE%BF%E0%AE%B2%E0%AE%BF%E0%AE%95%E0%AF%8D%E0%AE%95%E0%AE%BE" title="சிலிக்கா — tâmil" lang="ta" hreflang="ta" data-title="சிலிக்கா" data-language-autonym="தமிழ்" data-language-local-name="tâmil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%8B%E0%B8%B4%E0%B8%A5%E0%B8%B4%E0%B8%81%E0%B8%AD%E0%B8%99%E0%B9%84%E0%B8%94%E0%B8%AD%E0%B8%AD%E0%B8%81%E0%B9%84%E0%B8%8B%E0%B8%94%E0%B9%8C" title="ซิลิกอนไดออกไซด์ — tailandês" lang="th" hreflang="th" data-title="ซิลิกอนไดออกไซด์" data-language-autonym="ไทย" data-language-local-name="tailandês" 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/Silisyum_dioksit" title="Silisyum dioksit — turco" lang="tr" hreflang="tr" data-title="Silisyum dioksit" 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%94%D1%96%D0%BE%D0%BA%D1%81%D0%B8%D0%B4_%D0%BA%D1%80%D0%B5%D0%BC%D0%BD%D1%96%D1%8E" title="Діоксид кремнію — ucraniano" lang="uk" hreflang="uk" data-title="Діоксид кремнію" data-language-autonym="Українська" data-language-local-name="ucraniano" 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/%D8%B3%D9%84%DB%8C%DA%A9%D8%A7%D9%86_%DA%88%D8%A7%D8%A6%DB%8C_%D8%A2%DA%A9%D8%B3%D8%A7%D8%A6%DA%88" title="سلیکان ڈائی آکسائڈ — urdu" lang="ur" hreflang="ur" data-title="سلیکان ڈائی آکسائڈ" 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/Kremniy_dioksid" title="Kremniy dioksid — usbeque" lang="uz" hreflang="uz" data-title="Kremniy dioksid" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="usbeque" 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/Silic_dioxide" title="Silic dioxide — vietnamita" lang="vi" hreflang="vi" data-title="Silic dioxide" 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/Silika" title="Silika — waray" lang="war" hreflang="war" data-title="Silika" 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/%E4%BA%8C%E6%B0%A7%E5%8C%96%E7%A1%85" title="二氧化硅 — wu" lang="wuu" hreflang="wuu" data-title="二氧化硅" 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/%E4%BA%8C%E6%B0%A7%E5%8C%96%E7%A1%85" title="二氧化硅 — chinês" lang="zh" hreflang="zh" data-title="二氧化硅" data-language-autonym="中文" data-language-local-name="chinês" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/J%C4%AB-sng-h%C3%B2a_ke-s%C3%B2%CD%98" title="Jī-sng-hòa ke-sò͘ — min nan" lang="nan" hreflang="nan" data-title="Jī-sng-hòa ke-sò͘" 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/%E4%BA%8C%E6%B0%A7%E5%8C%96%E7%9F%BD" title="二氧化矽 — cantonês" lang="yue" hreflang="yue" data-title="二氧化矽" data-language-autonym="粵語" data-language-local-name="cantonês" 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/Q116269#sitelinks-wikipedia" title="Editar hiperligações interlínguas" class="wbc-editpage">Editar hiperligações</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="Espaços nominais"> <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 id="ca-nstab-main" class="selected vector-tab-noicon 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[h]" accesskey="h"><span>Ver histórico</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Ferramentas de página"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Ferramentas" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Ferramentas</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Ferramentas</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">ocultar</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Mais opções" > <div class="vector-menu-heading"> Operações </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Di%C3%B3xido_de_sil%C3%ADcio"><span>Ler</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&veaction=edit" title="Editar esta página [v]" accesskey="v"><span>Editar</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit" title="Editar o código-fonte desta página [e]" accesskey="e"><span>Editar código-fonte</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=history"><span>Ver histórico</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Geral </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" 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title="Hiperligação permanente para esta revisão desta página"><span>Hiperligação permanente</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=info" title="Mais informações sobre esta página"><span>Informações da página</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citar&page=Di%C3%B3xido_de_sil%C3%ADcio&id=69021469&wpFormIdentifier=titleform" title="Informação sobre como citar esta página"><span>Citar esta página</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fpt.wikipedia.org%2Fwiki%2FDi%25C3%25B3xido_de_sil%25C3%25ADcio"><span>Obter URL encurtado</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fpt.wikipedia.org%2Fwiki%2FDi%25C3%25B3xido_de_sil%25C3%25ADcio"><span>Descarregar código QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimir/exportar </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=Especial:Livro&bookcmd=book_creator&referer=Di%C3%B3xido+de+sil%C3%ADcio"><span>Criar um livro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Di%C3%B3xido_de_sil%C3%ADcio&action=show-download-screen"><span>Descarregar como PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&printable=yes" title="Versão para impressão desta página [p]" accesskey="p"><span>Versão para impressão</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"> 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class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div 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">Aspeto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">ocultar</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div 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0;text-align:center}.mw-parser-output .tmbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .tmbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .tmbox{margin:4px 10%}.mw-parser-output .tmbox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-night .mw-parser-output .tmbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-os .mw-parser-output .tmbox-speedy{background-color:#310402}}body.skin--responsive .mw-parser-output table.tmbox img{max-width:none!important}</style><table class="box-Mais_notas plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div style="width:52px"><span typeof="mw:File"><a href="/wiki/Ficheiro:Question_book-new.svg" class="mw-file-description"><img alt="Esta página cita fontes, mas não cobrem todo o conteúdo" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">Esta página <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes">cita fontes</a>, mas que <b><a href="/wiki/Wikip%C3%A9dia:V" class="mw-redirect" title="Wikipédia:V">não cobrem</a> todo o conteúdo</b>.<span class="hide-when-compact"> Ajude a <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Refer%C3%AAncias_e_notas_de_rodap%C3%A9" title="Wikipédia:Livro de estilo/Referências e notas de rodapé">inserir referências</a> (<small><i>Encontre fontes:</i> <span class="plainlinks"><a rel="nofollow" class="external text" href="https://wikipedialibrary.wmflabs.org/">ABW</a>  •  <a rel="nofollow" class="external text" href="https://www.periodicos.capes.gov.br">CAPES</a>  •  <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&as_epq=Di%C3%B3xido+de+sil%C3%ADcio">Google</a> (<a rel="nofollow" class="external text" href="https://www.google.com/search?hl=pt&tbm=nws&q=Di%C3%B3xido+de+sil%C3%ADcio&oq=Di%C3%B3xido+de+sil%C3%ADcio">N</a> • <a rel="nofollow" class="external text" href="http://books.google.com/books?&as_brr=0&as_epq=Di%C3%B3xido+de+sil%C3%ADcio">L</a> • <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?hl=pt&q=Di%C3%B3xido+de+sil%C3%ADcio">A</a>)</span></small>).</span> <small class="date-container"><i>(<span class="date">Agosto de 2022</span>)</i></small></div></td></tr></tbody></table><div class="hatnote"><span typeof="mw:File"><span><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/20px-Disambig_grey.svg.png" decoding="async" width="20" height="15" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/30px-Disambig_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/40px-Disambig_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></span></span> <b>Nota:</b> Se procura forma anidra, veja <a href="/wiki/%C3%81cido_ortossil%C3%ADcico" title="Ácido ortossilícico">ácido ortossilícico</a>.</div> <table class="toccolours" style="width: 300px; float: right; clear: right; margin: 0 0 1em 1em; border-collapse: collapse;"> <tbody><tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Dióxido de silício<br /><small><a href="/wiki/Wikip%C3%A9dia:Aviso_m%C3%A9dico" title="Wikipédia:Aviso médico">Alerta sobre risco à saúde</a></small> </th></tr> <tr> <td align="center" colspan="2" bgcolor="#ffffff"><span typeof="mw:File"><a href="/wiki/Ficheiro:Towering_Sand_Dunes.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Towering_Sand_Dunes.jpg/200px-Towering_Sand_Dunes.jpg" decoding="async" width="200" height="133" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Towering_Sand_Dunes.jpg/300px-Towering_Sand_Dunes.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Towering_Sand_Dunes.jpg/400px-Towering_Sand_Dunes.jpg 2x" data-file-width="2048" data-file-height="1360" /></a></span> </td></tr> <tr> <td align="center" colspan="2" bgcolor="#ffffff"><span typeof="mw:File"><a href="/wiki/Ficheiro:QuarzGeruest_a1-a2-Ebene.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/QuarzGeruest_a1-a2-Ebene.svg/200px-QuarzGeruest_a1-a2-Ebene.svg.png" decoding="async" width="200" height="167" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b4/QuarzGeruest_a1-a2-Ebene.svg/300px-QuarzGeruest_a1-a2-Ebene.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b4/QuarzGeruest_a1-a2-Ebene.svg/400px-QuarzGeruest_a1-a2-Ebene.svg.png 2x" data-file-width="1290" data-file-height="1080" /></a></span> </td></tr> <tr> <td>Outros nomes </td> <td>Sílica, Quartzo, areia </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Identificadores </th></tr> <tr> <td bgcolor=""><a href="/wiki/Registro_CAS" class="mw-redirect" title="Registro CAS">Número CAS</a> </td> <td bgcolor=""><span class="reflink plainlinksneverexpand"><a rel="nofollow" class="external text" href="https://commonchemistry.cas.org/detail?cas_rn=7631-86-9">7631-86-9</a></span> </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Propriedades </th></tr> <tr> <td><a href="/wiki/F%C3%B3rmula_qu%C3%ADmica" title="Fórmula química">Fórmula molecular</a> </td> <td>SiO<sub>2</sub> </td></tr> <tr> <td><a href="/wiki/Massa_molar" title="Massa molar">Massa molar</a> </td> <td>60.1 </td></tr> <tr> <td>Aparência </td> <td>substância em forma de pó branco<br />sólido (quando puro) </td></tr> <tr> <td><a href="/wiki/Densidade" title="Densidade">Densidade</a> </td> <td>2.2 g/cm³ <span style="color:gray"><sup>[</sup></span><sup><a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes"><span title="Esta afirmação precisa de uma referência para confirmá-la desde abril de 2017." style="color:gray"><i>carece de fontes</i></span></a><span class="printfooter">?</span><span style="color:gray">]</span></sup> </td></tr> <tr> <td><a href="/wiki/Ponto_de_fus%C3%A3o" title="Ponto de fusão">Ponto de fusão</a> </td> <td> <p>1713 °C <sup id="cite_ref-merck_1-0" class="reference"><a href="#cite_note-merck-1"><span>[</span>1<span>]</span></a></sup> </p> </td></tr> <tr> <td><a href="/wiki/Ponto_de_ebuli%C3%A7%C3%A3o" title="Ponto de ebulição">Ponto de ebulição</a> </td> <td> <p>> 2200 °C<sup id="cite_ref-merck_1-1" class="reference"><a href="#cite_note-merck-1"><span>[</span>1<span>]</span></a></sup> </p> </td></tr> <tr> <td><a href="/wiki/Solubilidade" title="Solubilidade">Solubilidade</a> em <a href="/wiki/%C3%81gua" title="Água">água</a> </td> <td>0.012 g em 100g <span style="color:gray"><sup>[</sup></span><sup><a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes"><span title="Esta afirmação precisa de uma referência para confirmá-la desde abril de 2017." style="color:gray"><i>carece de fontes</i></span></a><span class="printfooter">?</span><span style="color:gray">]</span></sup> </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Estrutura </th></tr> <tr> <td><a href="/wiki/Hibridiza%C3%A7%C3%A3o" title="Hibridização">Forma molecular</a> </td> <td><a href="/wiki/Tetraedro" title="Tetraedro">Tetraedro</a> </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Termoquímica </th></tr> <tr> <td><a href="/wiki/Entalpia_de_forma%C3%A7%C3%A3o" class="mw-redirect" title="Entalpia de formação">Entalpia padrão<br />de formação</a> Δ<sub>f</sub><i>H</i><sup><s>o</s></sup><sub>298</sub> </td> <td>-910,7 kJ·mol<sup>−1</sup> <span style="color:gray"><sup>[</sup></span><sup><a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes"><span title="Esta afirmação precisa de uma referência para confirmá-la desde abril de 2017." style="color:gray"><i>carece de fontes</i></span></a><span class="printfooter">?</span><span style="color:gray">]</span></sup> </td></tr> <tr> <td><a href="/wiki/Entropia_molar_padr%C3%A3o" title="Entropia molar padrão">Entropia molar<br />padrão</a> <i>S</i><sup><s>o</s></sup><sub>298</sub> </td> <td>41,5 J·K<sup>−1</sup> mol<sup>−1</sup> <span style="color:gray"><sup>[</sup></span><sup><a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes"><span title="Esta afirmação precisa de uma referência para confirmá-la desde abril de 2017." style="color:gray"><i>carece de fontes</i></span></a><span class="printfooter">?</span><span style="color:gray">]</span></sup> </td></tr> <tr> <td><a href="/wiki/Capacidade_t%C3%A9rmica" title="Capacidade térmica">Capacidade calorífica<br />molar</a> <i>C</i><sub>p</sub> <sub>298</sub> </td> <td>44,4 J·K<sup>−1</sup> mol<sup>−1</sup> <span style="color:gray"><sup>[</sup></span><sup><a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes"><span title="Esta afirmação precisa de uma referência para confirmá-la desde abril de 2017." style="color:gray"><i>carece de fontes</i></span></a><span class="printfooter">?</span><span style="color:gray">]</span></sup> </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Riscos associados </th></tr> <tr> <td><a href="/wiki/NFPA_704" class="mw-redirect" title="NFPA 704">NFPA 704</a> </td> <td> <div style="position: relative; height: 85px; width: 75px;"> <div style="position: absolute; height: 75px; width: 75px;"><span typeof="mw:File"><a href="/wiki/Ficheiro:NFPA_704.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/NFPA_704.svg/75px-NFPA_704.svg.png" decoding="async" width="75" height="75" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/NFPA_704.svg/113px-NFPA_704.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6f/NFPA_704.svg/150px-NFPA_704.svg.png 2x" data-file-width="512" data-file-height="512" /></a></span></div> <div title="Inflamabilidade" style="background:transparent; width:75px; height:2em; text-align:center; vertical-align:middle; position:absolute; top:8px; font-size:large;"><span class="abbr" style="color: black;" title="Inflamabilidade 0. Não irá queimar (p.ex. água).">0</span></div> <div title="Health" style="background: transparent; width: 37.5px; height: 2em; text-align: center; vertical-align: middle; position: absolute; top: 26px; font-size: large;"><span class="abbr" style="color: black;" title="Risco à saúde 0. Não apresenta danos à saúde. Não são necessárias precauções (p.ex. lanolina).">0</span></div> <div title="Reactivity" style="background: transparent; width: 37.5px; height: 2em; text-align: center; vertical-align: middle; position: absolute; top: 26px; left: 37.5px; font-size: large;"><span class="abbr" style="color: black;" title="Reatividade 0. Normalmente estável, mesmo sobre condições de exposição ao fogo, e não é reativo com a água (p.ex. nitrogênio líquido).">0</span></div> <div title="Other hazards" style="background: transparent; width: 75px; height: 2em; text-align: center; vertical-align: middle; position: absolute; top: 47px; font-size: small;"> </div> </div> </td></tr> <tr> <td><a href="/wiki/Frases_de_risco" class="mw-redirect" title="Frases de risco">Frases R</a> </td> <td>R42 R43 R49 </td></tr> <tr> <td><a href="/wiki/Frases_de_seguran%C3%A7a" class="mw-redirect" title="Frases de segurança">Frases S</a> </td> <td>S22 S36 S37 S45 S53 </td></tr> <tr> <td><a href="/wiki/Ponto_de_fulgor" title="Ponto de fulgor">Ponto de fulgor</a> </td> <td>não-inflamável </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2">Compostos relacionados </th></tr> <tr> <td>Outros <a href="/wiki/%C3%8Don" title="Íon">aniões</a>/<a href="/wiki/%C3%8Don" title="Íon">ânions</a> </td> <td><a href="/wiki/Sulfeto_de_sil%C3%ADcio" title="Sulfeto de silício">Sulfeto de silício</a><br /><a href="/wiki/Tetrafluoreto_de_sil%C3%ADcio" title="Tetrafluoreto de silício">Tetrafluoreto de silício</a><br /><a href="/wiki/Nitreto_de_sil%C3%ADcio" title="Nitreto de silício">Nitreto de silício</a> </td></tr> <tr> <td>Outros <a href="/wiki/%C3%8Don" title="Íon">catiões</a>/<a href="/wiki/%C3%8Don" title="Íon">cátions</a> </td> <td><a href="/wiki/%C3%93xido_de_alum%C3%ADnio" title="Óxido de alumínio">Óxido de alumínio</a><br /><a href="/wiki/Di%C3%B3xido_de_carbono" title="Dióxido de carbono">Dióxido de carbono</a><br /><a href="/wiki/Di%C3%B3xido_de_germ%C3%A2nio" title="Dióxido de germânio">Dióxido de germânio</a><br /><a href="/wiki/%C3%93xido_de_estanho_(IV)" class="mw-redirect" title="Óxido de estanho (IV)">Óxido de estanho (IV)</a><br /><a href="/w/index.php?title=%C3%93xido_de_chumbo_(IV)&action=edit&redlink=1" class="new" title="Óxido de chumbo (IV) (página não existe)">Óxido de chumbo (IV)</a><br /><a href="/wiki/Pent%C3%B3xido_de_f%C3%B3sforo" title="Pentóxido de fósforo">Pentóxido de fósforo</a> </td></tr> <tr> <td>Compostos relacionados </td> <td><a href="/wiki/%C3%81cido_sil%C3%ADcico" class="mw-redirect" title="Ácido silícico">Ácido silícico</a> </td></tr> <tr> <th style="background: #F8EABA; text-align: center;" colspan="2"><a class="mw-selflink selflink">Página de dados suplementares</a> </th></tr> <tr> <td><a class="mw-selflink-fragment" href="#Estrutura_e_propriedades">Estrutura e propriedades</a> </td> <td><a href="/wiki/%C3%8Dndice_de_refrac%C3%A7%C3%A3o" class="mw-redirect" title="Índice de refracção"><i>n</i></a>, <a href="/wiki/Constante_diel%C3%A9ctrica" class="mw-redirect" title="Constante dieléctrica">ε<sub>r</sub></a>, etc. </td></tr> <tr> <td><a class="mw-selflink-fragment" href="#Propriedades_termodinâmicas">Dados termodinâmicos</a> </td> <td>Phase behaviour<br />Solid, liquid, gas </td></tr> <tr> <td><a class="mw-selflink-fragment" href="#Dados_espectrais">Dados espectrais</a> </td> <td><a href="/wiki/Espectroscopia_UV/vis%C3%ADvel" title="Espectroscopia UV/visível">UV</a>, <a href="/wiki/Espectroscopia_de_infravermelho" title="Espectroscopia de infravermelho">IV</a>, <a href="/wiki/Espectroscopia_de_resson%C3%A2ncia_magn%C3%A9tica_nuclear" class="mw-redirect" title="Espectroscopia de ressonância magnética nuclear">RMN</a>, <a href="/wiki/Espectroscopia_de_massa" class="mw-redirect" title="Espectroscopia de massa">EM</a> </td></tr> <tr> <td style="background: #F8EABA; text-align: center;" colspan="2"><small><b>Exceto onde denotado, os dados referem-se a<br /> materiais sob <a href="/wiki/Condi%C3%A7%C3%B5es_normais_de_temperatura_e_press%C3%A3o" title="Condições normais de temperatura e pressão">condições normais de temperatura e pressão</a></b><br /><b><a href="/wiki/Wikip%C3%A9dia:Informa%C3%A7%C3%A3o_nas_infocaixas_de_qu%C3%ADmica" title="Wikipédia:Informação nas infocaixas de química">Referências e avisos gerais sobre esta caixa</a>.</b><br /><b><a href="/wiki/Wikip%C3%A9dia:Aviso_m%C3%A9dico" title="Wikipédia:Aviso médico">Alerta sobre risco à saúde</a>.</b> </small> </td></tr> </tbody></table> <p>O <a href="/wiki/Composto_qu%C3%ADmico" title="Composto químico">composto químico</a> <b>dióxido de silício</b>, também conhecido como <b>sílica</b>, é o <a href="/wiki/%C3%93xido" title="Óxido">óxido</a> de <a href="/wiki/Sil%C3%ADcio" title="Silício">silício</a> cuja <a href="/wiki/F%C3%B3rmula_qu%C3%ADmica" title="Fórmula química">fórmula química</a> é <a href="/wiki/Sil%C3%ADcio" title="Silício">Si</a><a href="/wiki/Oxig%C3%A9nio" title="Oxigénio">O</a><sub>2</sub>. Em seu estado natural, pode ser encontrado em diversas formas diferentes. Possui 17 formas cristalinas distintas, entre elas o <a href="/wiki/Quartzo" title="Quartzo">quartzo</a>, o <a href="/wiki/Top%C3%A1zio" title="Topázio">topázio</a> e a <a href="/wiki/Ametista" title="Ametista">ametista</a>. </p><p>A sílica é o principal componente da areia e a principal matéria prima para o <a href="/wiki/Vidro" title="Vidro">vidro</a>. Também é usado na fabricação de <a href="/wiki/Cimento_Portland" title="Cimento Portland">cimento Portland</a>. </p><p>É um dos óxidos mais abundantes na <a href="/wiki/Crosta_terrestre" title="Crosta terrestre">crosta terrestre</a>. Ocorre na forma de <a href="/wiki/Pedra" class="mw-redirect" title="Pedra">pedra</a>, <a href="/wiki/Areia" title="Areia">areia</a>, <a href="/wiki/Quartzo" title="Quartzo">quartzo</a>, etc. </p><p>A sílica fundida é produzida em fornos de arco, de <a href="/wiki/Plasma" title="Plasma">plasma</a> ou outros tipos. Pode ter pureza de até 99,9% de SiO<sub>2</sub>. Usada principalmente na <a href="/wiki/Ind%C3%BAstria_eletro-eletr%C3%B4nica" class="mw-redirect" title="Indústria eletro-eletrônica">indústria eletro-eletrônica</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Usos">Usos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&veaction=edit&section=1" title="Editar secção: Usos" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit&section=1" title="Editar código-fonte da secção: Usos"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A areia é extensamente usada como agregado na <a href="/wiki/Constru%C3%A7%C3%A3o_civil" class="mw-redirect" title="Construção civil">construção civil</a>, bem como na indústria de fundição, refratários, etc. </p> <div class="mw-heading mw-heading3"><h3 id="Construção_civil"><span id="Constru.C3.A7.C3.A3o_civil"></span>Construção civil</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&veaction=edit&section=2" title="Editar secção: Construção civil" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit&section=2" title="Editar código-fonte da secção: Construção civil"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Cerca de 95% da utilização comercial de dióxido de silício (areia) ocorre na indústria da construção, como por exemplo, para a produção de <a href="/wiki/Concreto" title="Concreto">concreto</a> (concreto de cimento Portland).<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span>[</span>2<span>]</span></a></sup> </p><p>Certos depósitos de areia de sílica, com tamanho e forma de partículas desejáveis e teor de argila e outros minerais desejáveis, foram importantes para a <a href="/wiki/Fundi%C3%A7%C3%A3o" title="Fundição">fundição</a> em areia de produtos metálicos.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span>[</span>3<span>]</span></a></sup> O elevado ponto de fusão da sílica permite a sua utilização em aplicações como a fundição em ferro; a fundição em areia moderna utiliza por vezes outros minerais por outras razões. </p><p>A sílica cristalina é utilizada na fratura hidráulica de formações que contêm <a href="/wiki/%C3%93leo_de_xisto" class="mw-redirect" title="Óleo de xisto">óleo</a> e <a href="/wiki/G%C3%A1s_de_xisto" title="Gás de xisto">gás de xisto</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span>[</span>4<span>]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Vidro">Vidro</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&veaction=edit&section=3" title="Editar secção: Vidro" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit&section=3" title="Editar código-fonte da secção: Vidro"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A silica é <a href="/wiki/Mat%C3%A9ria-prima" title="Matéria-prima">matéria-prima</a> básica para a produção de <a href="/wiki/Vidro" title="Vidro">vidro</a>. Misturada com <a href="/wiki/Cal" title="Cal">cal</a> e <a href="/wiki/Carbonato_de_s%C3%B3dio" title="Carbonato de sódio">carbonato de sódio</a> produz os vidros comuns para <a href="/wiki/Janela" title="Janela">janelas</a>, <a href="/wiki/Garrafa" title="Garrafa">garrafas</a>, <a href="/wiki/L%C3%A2mpada" class="mw-disambig" title="Lâmpada">lâmpadas</a>, etc. (a maior parte dos vidros planos é fabricada pela deposição em uma cuba com <a href="/wiki/Estanho" title="Estanho">estanho</a> fundido sob atmosfera controlada). Com <a href="/wiki/%C3%93xido_de_boro" class="mw-redirect" title="Óxido de boro">óxido de boro</a>, produz vidros resistentes a altas temperaturas e <a href="/wiki/Choque_t%C3%A9rmico" title="Choque térmico">choques térmicos</a>, conhecidos pelo nome comercial <a href="/wiki/Pirex" class="mw-redirect" title="Pirex">pirex</a>. A sílica fundida de alta pureza, por sua vez, pode ser usada para vidros de alta resistência térmica e mecânica (usados em <a href="/wiki/Nave_espacial" title="Nave espacial">naves espaciais</a>). </p> <div class="mw-heading mw-heading3"><h3 id="Outros">Outros</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&veaction=edit&section=4" title="Editar secção: Outros" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit&section=4" title="Editar código-fonte da secção: Outros"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O quartzo tem propriedades <a href="/wiki/Cristal_piezoel%C3%A9trico" title="Cristal piezoelétrico">piezolétricas</a> e, por isso, é bastante empregado em componentes eletrônicos que fazem uso deste fenômeno. </p><p>Algumas propriedades do quartzo: massa específica 2 650 kg/m³, ponto de fusão 1 830 °C, condutividade térmica 1,3 W/(m K), coeficiente de expansão térmica 1,23 10-5 1/K, resistência à compressão 2 070 MPa, <a href="/wiki/Coeficiente_de_Poisson" title="Coeficiente de Poisson">coeficiente de Poisson</a> 0,17, módulo de elasticidade 70 MPa, resistividade 10<sup>12</sup> a 10<sup>16</sup> <a href="/wiki/Ohm" title="Ohm">ohm</a> m, permissividade 3,8 a 5,4, capacidade dielétrica 15 a 25 kV/mm. </p><p>Algumas propriedades da sílica fundida: massa específica 2 200 kg/m³, ponto de fusão 1 830 °C, condutividade térmica 1,4 W/(m K), coeficiente de expansão térmica 0,04 10-5 1/K, calor específico 740 J/(kg K), resistência à compressão 700 a 1 400 MPa, <a href="/wiki/Coeficiente_de_Poisson" title="Coeficiente de Poisson">coeficiente de Poisson</a> 0,165, módulo de elasticidade 73 MPa, resistividade >10¹⁸ ohm m, permissividade 3,8, capacidade dielétrica 15 a 40 kV/mm. </p> <div class="mw-heading mw-heading2"><h2 id="Efeitos_na_saúde"><span id="Efeitos_na_sa.C3.BAde"></span>Efeitos na saúde</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&veaction=edit&section=5" title="Editar secção: Efeitos na saúde" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit&section=5" title="Editar código-fonte da secção: Efeitos na saúde"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Ficheiro:Piasek_kwarcowy.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/53/Piasek_kwarcowy.jpg/220px-Piasek_kwarcowy.jpg" decoding="async" width="220" height="205" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/5/53/Piasek_kwarcowy.jpg 1.5x" data-file-width="300" data-file-height="280" /></a><figcaption>Areia de quartzo</figcaption></figure> <p>A exposição prolongada à forma cristalina da sílica induz a produção de quimíocinas, citocinas inflamatórias e fatores de crescimento. Estes mediadores têm-se revelado importantes para a iniciação e progressão de doenças pulmonares induzidas pela sílica, uma vez que intervêm no controlo da transcrição de <a href="/wiki/ARN_mensageiro" title="ARN mensageiro">mRNA</a>s.<sup id="cite_ref-:0_5-0" class="reference"><a href="#cite_note-:0-5"><span>[</span>5<span>]</span></a></sup> </p><p>Além destes mediadores, a sílica cristalina poderá induzir toxicidade pela formação de espécies reativas de oxigênio diretamente na sua superfície ou durante a fagocitose. ROS assim produzidos criam um estado de stress oxidativo e parecem desencadear eventos de sinalização para NF-kB e AP-1 (fatores estes que também se encontram envolvidos no controlo da transcrição de <a href="/wiki/ARN_mensageiro" title="ARN mensageiro">mRNA</a>s). O estresse oxidativo deste modo gerado tem sido proposto como o elemento chave na patogênese da silicose e na indução do cancro do pulmão pela sílica.<sup id="cite_ref-:0_5-1" class="reference"><a href="#cite_note-:0-5"><span>[</span>5<span>]</span></a></sup> </p> <h2 id="Referências" style="cursor: help;" title="Esta seção foi configurada para não ser editável diretamente. Edite a página toda ou a seção anterior em vez disso."><span id="Refer.C3.AAncias"></span>Referências</h2> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-merck-1"><span class="mw-cite-backlink">↑ <sup><i><b><a href="#cite_ref-merck_1-0">a</a></b></i></sup> <sup><i><b><a href="#cite_ref-merck_1-1">b</a></b></i></sup></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://assets.chemportals.merck.de/documents/sds/emd/deu/de/1075/107536.pdf">Sicherheitsdatenblatt Merck</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><cite class="citation journal">Flörke, Otto W.; Graetsch, Heribert A.; Brunk, Fred; Benda, Leopold; Paschen, Siegfried; Bergna, Horacio E.; Roberts, William O.; Welsh, William A.; Libanati, Cristian (15 de abril de 2008). Wiley-VCH Verlag GmbH & Co. KGaA, ed. <a rel="nofollow" class="external text" href="https://onlinelibrary.wiley.com/doi/10.1002/14356007.a23_583.pub3">«Silica»</a>. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA (em inglês): a23_583.pub3. <a href="/wiki/International_Standard_Book_Number" title="International Standard Book Number">ISBN</a> <a href="/wiki/Especial:Fontes_de_livros/978-3-527-30673-2" title="Especial:Fontes de livros/978-3-527-30673-2">978-3-527-30673-2</a>. <a href="/wiki/Digital_object_identifier" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1002%2F14356007.a23_583.pub3">10.1002/14356007.a23_583.pub3</a><span class="reference-accessdate">. Consultado em 14 de agosto de 2022</span></cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fpt.wikipedia.org%3ADi%C3%B3xido+de+sil%C3cio&rft.atitle=Silica&rft.au=Benda%2C+Leopold&rft.au=Bergna%2C+Horacio+E.&rft.au=Brunk%2C+Fred&rft.au=Graetsch%2C+Heribert+A.&rft.au=Libanati%2C+Cristian&rft.au=Paschen%2C+Siegfried&rft.au=Roberts%2C+William+O.&rft.au=Welsh%2C+William+A.&rft.aufirst=Otto+W.&rft.aulast=Fl%C3%B6rke&rft.date=2008-04-15&rft.genre=article&rft.isbn=978-3-527-30673-2&rft.pages=a23_583.pub3&rft_id=https%3A%2F%2Fonlinelibrary.wiley.com%2Fdoi%2F10.1002%2F14356007.a23_583.pub3&rft_id=info%3Adoi%2F10.1002%2F14356007.a23_583.pub3&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Nevin, Charles Merrick (1925). <i>Albany moulding sands of the Hudson Valley</i>. University of the State of New York at Albany.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">Greenhouse S (23 Aug 2013). "New Rules Would Cut Silica Dust Exposure". <i>NYTimes</i>.</span> </li> <li id="cite_note-:0-5"><span class="mw-cite-backlink">↑ <sup><i><b><a href="#cite_ref-:0_5-0">a</a></b></i></sup> <sup><i><b><a href="#cite_ref-:0_5-1">b</a></b></i></sup></span> <span class="reference-text"><cite class="citation journal">Castranova, Vincent (outubro de 2004). <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016/j.freeradbiomed.2004.05.032">«Signaling Pathways Controlling The Production Of Inflammatory Mediators in Response To Crystalline Silica Exposure: Role Of Reactive Oxygen/Nitrogen Species»</a>. <i>Free Radical Biology and Medicine</i> (7): 916–925. <a href="/wiki/International_Standard_Serial_Number" title="International Standard Serial Number">ISSN</a> <a rel="nofollow" class="external text" href="//www.worldcat.org/issn/0891-5849">0891-5849</a>. <a href="/wiki/Digital_object_identifier" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1016%2Fj.freeradbiomed.2004.05.032">10.1016/j.freeradbiomed.2004.05.032</a><span class="reference-accessdate">. Consultado em 14 de maio de 2022</span></cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fpt.wikipedia.org%3ADi%C3%B3xido+de+sil%C3cio&rft.atitle=Signaling+Pathways+Controlling+The+Production+Of+Inflammatory+Mediators+in+Response+To+Crystalline+Silica+Exposure%3A+Role+Of+Reactive+Oxygen%2FNitrogen+Species&rft.aufirst=Vincent&rft.aulast=Castranova&rft.date=2004-10&rft.genre=article&rft.issn=0891-5849&rft.issue=7&rft.jtitle=Free+Radical+Biology+and+Medicine&rft.pages=916-925&rft_id=http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.freeradbiomed.2004.05.032&rft_id=info%3Adoi%2F10.1016%2Fj.freeradbiomed.2004.05.032&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> </ol></div></div> <table class="noprint" style="border-top:none; border-bottom:none; background:transparent; color: inherit"><tbody><tr> <td style="text-align: center;"><span typeof="mw:File"><a href="/wiki/Ficheiro:Farm-Fresh_flask.png" class="mw-file-description"><img alt="Ícone de esboço" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Farm-Fresh_flask.png/30px-Farm-Fresh_flask.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/2/21/Farm-Fresh_flask.png 1.5x" data-file-width="32" data-file-height="32" /></a></span></td> <td><i>Este artigo sobre <a href="/wiki/Qu%C3%ADmica" title="Química">Química</a> é um <a href="/wiki/Wikip%C3%A9dia:Esbo%C3%A7o" title="Wikipédia:Esboço">esboço</a>. Você pode ajudar a Wikipédia <b><span class="plainlinks"><a class="external text" href="https://pt.wikipedia.org/w/index.php?title=Di%C3%B3xido_de_sil%C3%ADcio&action=edit">expandindo-o</a></span></b>.</i></td> </tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtida de "<a dir="ltr" href="https://pt.wikipedia.org/w/index.php?title=Dióxido_de_silício&oldid=69021469">https://pt.wikipedia.org/w/index.php?title=Dióxido_de_silício&oldid=69021469</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categorias</a>: <ul><li><a href="/wiki/Categoria:Silicatos" title="Categoria:Silicatos">Silicatos</a></li><li><a href="/wiki/Categoria:Aditivos_de_n%C3%BAmero_E" title="Categoria:Aditivos de número E">Aditivos de número E</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorias ocultas: <ul><li><a href="/wiki/Categoria:!CS1_ingl%C3%AAs-fontes_em_l%C3%ADngua_(en)" title="Categoria:!CS1 inglês-fontes em língua (en)">!CS1 inglês-fontes em língua (en)</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_desde_agosto_de_2022" title="Categoria:!Artigos que carecem de notas de rodapé desde agosto de 2022">!Artigos que carecem de notas de rodapé desde agosto de 2022</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_sem_indica%C3%A7%C3%A3o_de_tema" title="Categoria:!Artigos que carecem de notas de rodapé sem indicação de tema">!Artigos que carecem de notas de rodapé sem indicação de tema</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_desde_abril_de_2017" title="Categoria:!Artigos que carecem de notas de rodapé desde abril de 2017">!Artigos que carecem de notas de rodapé desde abril de 2017</a></li><li><a href="/wiki/Categoria:!Esbo%C3%A7os_maiores_que_5000_bytes" title="Categoria:!Esboços maiores que 5000 bytes">!Esboços maiores que 5000 bytes</a></li><li><a href="/wiki/Categoria:!Esbo%C3%A7os_sobre_qu%C3%ADmica" title="Categoria:!Esboços sobre química">!Esboços sobre química</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Esta página foi editada pela última vez às 06h53min de 19 de novembro de 2024.</li> <li id="footer-info-copyright">Este texto é disponibilizado nos termos da licença <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Atribuição-CompartilhaIgual 4.0 Internacional (CC BY-SA 4.0) da Creative Commons</a>; pode estar sujeito a condições adicionais. 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