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Indicateur coloré — Wikipédia

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Disponible en 22 langues." > <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-22" 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">22 langues</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/Aanduider" title="Aanduider – afrikaans" lang="af" hreflang="af" data-title="Aanduider" 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%85%D8%A4%D8%B4%D8%B1_(%D9%83%D9%8A%D9%85%D9%8A%D8%A7%D8%A1)" title="مؤشر (كيمياء) – arabe" lang="ar" hreflang="ar" data-title="مؤشر (كيمياء)" data-language-autonym="العربية" data-language-local-name="arabe" 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/%C4%B0ndikator_(kimya)" title="İndikator (kimya) – azerbaïdjanais" lang="az" hreflang="az" data-title="İndikator (kimya)" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaïdjanais" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Indikator_(Chemie)" title="Indikator (Chemie) – allemand" lang="de" hreflang="de" data-title="Indikator (Chemie)" data-language-autonym="Deutsch" data-language-local-name="allemand" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en badge-Q70894304 mw-list-item" title=""><a href="https://en.wikipedia.org/wiki/Chemical_indicator" title="Chemical indicator – anglais" lang="en" hreflang="en" data-title="Chemical indicator" data-language-autonym="English" data-language-local-name="anglais" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Indicador_(qu%C3%ADmica)" title="Indicador (química) – espagnol" lang="es" hreflang="es" data-title="Indicador (química)" data-language-autonym="Español" data-language-local-name="espagnol" 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/Indikaator_(keemia)" title="Indikaator (keemia) – estonien" lang="et" hreflang="et" data-title="Indikaator (keemia)" data-language-autonym="Eesti" data-language-local-name="estonien" 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/Adierazle_(kimika)" title="Adierazle (kimika) – basque" lang="eu" hreflang="eu" data-title="Adierazle (kimika)" data-language-autonym="Euskara" data-language-local-name="basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%94%D5%AB%D5%B4%D5%AB%D5%A1%D5%AF%D5%A1%D5%B6_%D5%AB%D5%B6%D5%A4%D5%AB%D5%AF%D5%A1%D5%BF%D5%B8%D6%80%D5%B6%D5%A5%D6%80" title="Քիմիական ինդիկատորներ – arménien" lang="hy" hreflang="hy" data-title="Քիմիական ինդիկատորներ" data-language-autonym="Հայերեն" data-language-local-name="arménien" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Indicatore_(chimica)" title="Indicatore (chimica) – italien" lang="it" hreflang="it" data-title="Indicatore (chimica)" data-language-autonym="Italiano" data-language-local-name="italien" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%98%E1%83%9C%E1%83%93%E1%83%98%E1%83%99%E1%83%90%E1%83%A2%E1%83%9D%E1%83%A0%E1%83%98_(%E1%83%A5%E1%83%98%E1%83%9B%E1%83%98%E1%83%90)" title="ინდიკატორი (ქიმია) – géorgien" lang="ka" hreflang="ka" data-title="ინდიკატორი (ქიმია)" data-language-autonym="ქართული" data-language-local-name="géorgien" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A7%80%EC%8B%9C%EC%95%BD" title="지시약 – coréen" lang="ko" hreflang="ko" data-title="지시약" data-language-autonym="한국어" data-language-local-name="coréen" 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%98%D0%BD%D0%B4%D0%B8%D0%BA%D0%B0%D1%82%D0%BE%D1%80%D0%BB%D0%BE%D1%80" title="Индикаторлор – kirghize" lang="ky" hreflang="ky" data-title="Индикаторлор" data-language-autonym="Кыргызча" data-language-local-name="kirghize" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A5%D0%B8%D0%BC%D0%B8%D0%B9%D0%BD_%D0%B8%D0%BD%D0%B4%D0%B8%D0%BA%D0%B0%D1%82%D0%BE%D1%80" title="Химийн индикатор – mongol" lang="mn" hreflang="mn" data-title="Химийн индикатор" data-language-autonym="Монгол" data-language-local-name="mongol" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Indicator_(scheikunde)" title="Indicator (scheikunde) – néerlandais" lang="nl" hreflang="nl" data-title="Indicator (scheikunde)" data-language-autonym="Nederlands" data-language-local-name="néerlandais" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Wska%C5%BAniki_chemiczne" title="Wskaźniki chemiczne – polonais" lang="pl" hreflang="pl" data-title="Wskaźniki chemiczne" data-language-autonym="Polski" data-language-local-name="polonais" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Indicador_(qu%C3%ADmica)" title="Indicador (química) – portugais" lang="pt" hreflang="pt" data-title="Indicador (química)" data-language-autonym="Português" data-language-local-name="portugais" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A5%D0%B8%D0%BC%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5_%D0%B8%D0%BD%D0%B4%D0%B8%D0%BA%D0%B0%D1%82%D0%BE%D1%80%D1%8B" title="Химические индикаторы – russe" lang="ru" hreflang="ru" data-title="Химические индикаторы" data-language-autonym="Русский" data-language-local-name="russe" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Indik%C3%A1tor_(ch%C3%A9mia)" title="Indikátor (chémia) – slovaque" lang="sk" hreflang="sk" data-title="Indikátor (chémia)" data-language-autonym="Slovenčina" data-language-local-name="slovaque" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A5%D1%96%D0%BC%D1%96%D1%87%D0%BD%D1%96_%D1%96%D0%BD%D0%B4%D0%B8%D0%BA%D0%B0%D1%82%D0%BE%D1%80%D0%B8" title="Хімічні індикатори – ukrainien" lang="uk" hreflang="uk" data-title="Хімічні індикатори" data-language-autonym="Українська" data-language-local-name="ukrainien" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Indikatorlar" title="Indikatorlar – ouzbek" lang="uz" hreflang="uz" data-title="Indikatorlar" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="ouzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%8C%87%E7%A4%BA%E5%89%82" title="指示剂 – chinois" lang="zh" hreflang="zh" data-title="指示剂" data-language-autonym="中文" data-language-local-name="chinois" class="interlanguage-link-target"><span>中文</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/Q2200407#sitelinks-wikipedia" title="Modifier les liens interlangues" class="wbc-editpage">Modifier les liens</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="Espaces de noms"> <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 mw-list-item"><a href="/wiki/Indicateur_color%C3%A9" title="Voir le contenu de la page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discussion:Indicateur_color%C3%A9" rel="discussion" title="Discussion au sujet de cette page de contenu [t]" accesskey="t"><span>Discussion</span></a></li> </ul> </div> </div> <div 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class="noprint">Un article de Wikipédia, l&#039;encyclopédie libre.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirigé depuis <a href="/w/index.php?title=Indicateurs_color%C3%A9s&amp;redirect=no" class="mw-redirect" title="Indicateurs colorés">Indicateurs colorés</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="fr" dir="ltr"><p>En <a href="/wiki/Chimie" title="Chimie">chimie</a>, un <b>indicateur coloré</b> est un couple de deux <a href="/wiki/Esp%C3%A8ces_chimiques" class="mw-redirect" title="Espèces chimiques">espèces chimiques</a> (ou plusieurs couples faisant intervenir l’une des espèces du premier couple) dont l’une de ces espèces prédomine par rapport aux autres en <a href="/wiki/Solution_(chimie)" title="Solution (chimie)">solution</a>, et ce en fonction des propriétés du milieu. En fonction de l’espèce qui prédomine, la <a href="/wiki/Couleur" title="Couleur">couleur</a> de la solution est différente. Une espèce peut être incolore. </p> <div class="mw-heading mw-heading2"><h2 id="Typologie">Typologie</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Indicateur_color%C3%A9&amp;veaction=edit&amp;section=1" title="Modifier la section : Typologie" class="mw-editsection-visualeditor"><span>modifier</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Indicateur_color%C3%A9&amp;action=edit&amp;section=1" title="Modifier le code source de la section : Typologie"><span>modifier le code</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>On distingue&#160;: </p> <ul><li>les <a href="/wiki/Indicateur_de_pH" title="Indicateur de pH">indicateurs colorés</a> de <a href="/wiki/Potentiel_hydrog%C3%A8ne" title="Potentiel hydrogène">pH</a> sont les plus connus et sont souvent sous-entendus lorsque l'on parle d'indicateur coloré&#160;;</li> <li>les <a href="/wiki/Indicateur_redox" class="mw-redirect" title="Indicateur redox">indicateurs colorés</a> <a href="/wiki/R%C3%A9action_d%27oxydor%C3%A9duction" title="Réaction d&#39;oxydoréduction">redox</a> (ou de <a href="/wiki/Potentiel_%C3%A9lectrochimique" title="Potentiel électrochimique">potentiel électrochimique</a>)&#160;;</li> <li>les <a href="/wiki/Indicateur_de_complexom%C3%A9trie" title="Indicateur de complexométrie">indicateurs colorés</a> de <a href="/wiki/Complexe_(chimie)" title="Complexe (chimie)">complexométrie</a>, comme le <a href="/wiki/Noir_%C3%A9riochrome_T" class="mw-redirect" title="Noir ériochrome T">NET</a> et comprenant les molécules <a href="/wiki/Hygroscopique" title="Hygroscopique">hygroscopiques</a>&#160;;</li> <li>les <a href="/w/index.php?title=Indicateur_de_pr%C3%A9cipitation&amp;action=edit&amp;redlink=1" class="new" title="Indicateur de précipitation (page inexistante)">indicateurs colorés</a> de <a href="/wiki/Pr%C3%A9cipit%C3%A9" title="Précipité">précipitation</a>.</li></ul> <p>Les indicateurs colorés sont, entre autres, utilisés pour déterminer le <a href="/wiki/Point_d%27%C3%A9quivalence" title="Point d&#39;équivalence">point d'équivalence</a> lors d'un <a href="/wiki/Titrage_colorim%C3%A9trique" class="mw-redirect" title="Titrage colorimétrique">titrage colorimétrique</a>. </p> <div class="navbox-container" style="clear:both;"> <table class="navbox collapsible noprint autocollapse" style=""> <tbody><tr><th class="navbox-title" colspan="2" style=""><div style="float:left; width:6em; text-align:left"><div class="noprint plainlinks nowrap tnavbar" style="padding:0; font-size:xx-small; color:var(--color-emphasized, #000000);"><a href="/wiki/Mod%C3%A8le:Palette_Indicateurs_color%C3%A9s" title="Modèle:Palette Indicateurs colorés"><abbr class="abbr" title="Voir ce modèle.">v</abbr></a>&#160;· <a class="external text" href="https://fr.wikipedia.org/w/index.php?title=Mod%C3%A8le:Palette_Indicateurs_color%C3%A9s&amp;action=edit"><abbr class="abbr" title="Modifier ce modèle. Merci de prévisualiser avant de sauvegarder.">m</abbr></a></div></div><div style="font-size:110%"><a class="mw-selflink selflink">Indicateurs colorés</a></div></th> </tr> <tr> <th class="navbox-group" style="width:270px"><a href="/wiki/Indicateur_de_pH" title="Indicateur de pH">Indicateurs de pH</a></th> <td class="navbox-list" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Alizarine" title="Alizarine">Alizarine</a></li> <li><a href="/wiki/Anthocyane" title="Anthocyane">Anthocyane</a></li> <li><a href="/wiki/Anthocyanidine" title="Anthocyanidine">Anthocyanidine</a></li> <li><a href="/wiki/Azolitmine" title="Azolitmine">Azolitmine</a></li> <li><a href="/wiki/Bleu_de_bromoph%C3%A9nol" title="Bleu de bromophénol">Bleu de bromophénol</a></li> <li><a href="/wiki/Bleu_de_bromothymol" title="Bleu de bromothymol">Bleu de bromothymol</a></li> <li><a href="/wiki/Bleu_de_thymol" title="Bleu de thymol">Bleu de thymol</a></li> <li><a href="/wiki/Carmin_d%27indigo" title="Carmin d&#39;indigo">Carmin d'indigo</a></li> <li><a href="/wiki/%C3%89osine" title="Éosine">Éosine</a></li> <li><a href="/wiki/Erythrol%C3%A9ine" title="Erythroléine">Erythroléine</a></li> <li><a href="/wiki/H%C3%A9lianthine" title="Hélianthine">Hélianthine</a></li> <li><a href="/wiki/Jaune_de_m%C3%A9thyle" title="Jaune de méthyle">Jaune de méthyle</a></li> <li><a href="/wiki/Jaune_orang%C3%A9_S" title="Jaune orangé S">Jaune orangé S</a></li> <li><a href="/wiki/Malvine" title="Malvine">Malvine</a></li> <li><a href="/wiki/4-Nitroph%C3%A9nol" title="4-Nitrophénol">4-Nitrophénol</a></li> <li><a href="/wiki/%C5%92nine" title="Œnine">Œnine</a></li> <li><a href="/wiki/Orc%C3%A9ine" title="Orcéine">Orcéine</a></li> <li><a href="/wiki/Papier_de_tournesol" title="Papier de tournesol">Papier de tournesol</a></li> <li><a href="/wiki/Ph%C3%A9nolphtal%C3%A9ine" title="Phénolphtaléine">Phénolphtaléine</a></li> <li><a href="/wiki/Pourpre_de_bromocr%C3%A9sol" title="Pourpre de bromocrésol">Pourpre de bromocrésol</a></li> <li><a href="/wiki/Primuline" title="Primuline">Primuline</a></li> <li><a href="/wiki/Rouge_congo" title="Rouge congo">Rouge congo</a></li> <li><a href="/wiki/Rouge_de_cr%C3%A9sol" title="Rouge de crésol">Rouge de crésol</a></li> <li><a href="/wiki/Rouge_de_m%C3%A9thyle" title="Rouge de méthyle">Rouge de méthyle</a></li> <li><a href="/wiki/Rouge_de_ph%C3%A9nol" title="Rouge de phénol">Rouge de phénol</a></li> <li><a href="/wiki/Rouge_neutre" title="Rouge neutre">Rouge neutre</a></li> <li><a href="/wiki/Thymolphtal%C3%A9ine" title="Thymolphtaléine">Thymolphtaléine</a></li> <li><a href="/wiki/Vert_de_bromocr%C3%A9sol" title="Vert de bromocrésol">Vert de bromocrésol</a></li> <li><a href="/wiki/Vert_malachite" title="Vert malachite">Vert malachite</a></li> <li><a href="/wiki/Violet_de_gentiane" title="Violet de gentiane">Violet de gentiane</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:270px"><a href="/wiki/Indicateur_r%C3%A9dox" title="Indicateur rédox">Indicateurs rédox</a></th> <td class="navbox-list navbox-even" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Bipyridine" title="Bipyridine">Bipyridine</a></li> <li><a href="/wiki/Bleu_de_m%C3%A9thyl%C3%A8ne" title="Bleu de méthylène">Bleu de méthylène</a></li> <li><a href="/wiki/Carmin_d%27indigo" title="Carmin d&#39;indigo">Carmin d'indigo</a></li> <li><a href="/wiki/Chlorure_de_triph%C3%A9nylt%C3%A9trazolium" title="Chlorure de triphényltétrazolium">Chlorure de triphényltétrazolium</a></li> <li><a href="/wiki/Diph%C3%A9nylamine" title="Diphénylamine">Diphénylamine</a></li> <li><a href="/wiki/Ferro%C3%AFne" title="Ferroïne">Ferroïne</a></li> <li><a href="/wiki/1,10-Ph%C3%A9nanthroline" title="1,10-Phénanthroline">1,10-Phénantroline</a></li> <li><a href="/wiki/Rouge_neutre" title="Rouge neutre">Rouge neutre</a></li> <li><a href="/wiki/Safranine" title="Safranine">Safranine</a></li> <li><a href="/wiki/Thionine" title="Thionine">Thionine</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:270px"><a href="/wiki/Indicateur_de_complexom%C3%A9trie" title="Indicateur de complexométrie">Indicateurs de complexométrie</a></th> <td class="navbox-list" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Curcumine" title="Curcumine">Curcumine</a></li> <li><a href="/wiki/Noir_%C3%89riochrome_T" title="Noir Ériochrome T">Noir Ériochrome T</a></li> <li><a href="/wiki/Murexide" title="Murexide">Murexide</a></li> <li><a href="/wiki/Orange_de_xyl%C3%A9nol" title="Orange de xylénol">Orange de xylénol</a></li> <li><a href="/wiki/Violet_de_phtal%C3%A9ine" title="Violet de phtaléine">Violet de phtaléine</a></li></ul> </div></td> </tr> <tr> <th class="navbox-group" style="width:270px"><a href="/w/index.php?title=Indicateur_de_pr%C3%A9cipitation&amp;action=edit&amp;redlink=1" class="new" title="Indicateur de précipitation (page inexistante)">Indicateurs de précipitation</a> (<a href="/wiki/Argentim%C3%A9trie" title="Argentimétrie">argentimétrie</a>)</th> <td class="navbox-list navbox-even" style=""><div class="liste-horizontale"> <ul><li><a href="/wiki/Chromate_de_potassium" title="Chromate de potassium">Chromate de potassium</a></li> <li><a href="/wiki/Fluoresc%C3%A9ine" title="Fluorescéine">Fluorescéine</a></li></ul> </div></td> </tr> </tbody></table> </div> <ul id="bandeau-portail" class="bandeau-portail"><li><span class="bandeau-portail-element"><span class="bandeau-portail-icone"><span class="noviewer" typeof="mw:File"><a href="/wiki/Portail:Chimie" title="Portail de la chimie"><img alt="icône décorative" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/59/Nuvola_apps_edu_science.svg/24px-Nuvola_apps_edu_science.svg.png" decoding="async" width="24" height="24" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/59/Nuvola_apps_edu_science.svg/36px-Nuvola_apps_edu_science.svg.png 1.5x, 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