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[n]" accesskey="n"><span>Discussió per aquest IP</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Lloc"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Contingut" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <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">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</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">Inici</div> </a> </li> <li id="toc-Història" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Història"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Història</span> </div> </a> <button aria-controls="toc-Història-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Commuta la subsecció Història</span> </button> <ul id="toc-Història-sublist" class="vector-toc-list"> <li id="toc-Conreus_genèticament_modificats" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conreus_genèticament_modificats"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>Conreus genèticament modificats</span> </div> </a> <ul id="toc-Conreus_genèticament_modificats-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Referències</span> </div> </a> <ul id="toc-Referències-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Enllaços_externs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Enllaços_externs"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Enllaços externs</span> </div> </a> <ul id="toc-Enllaços_externs-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="Contingut" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Taula de continguts" > <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="Commuta la taula de continguts." > <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">Commuta la taula de continguts.</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">Àcid 2,4-diclorofenoxiacètic</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="Vés a un article en una altra llengua. Disponible en 30 llengües" > <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-30" 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">30 llengües</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AD%D9%85%D8%B6_4%D8%8C2-%D8%AB%D9%86%D8%A7%D8%A6%D9%8A_%D9%83%D9%84%D9%88%D8%B1%D9%88_%D9%81%D9%8A%D9%86%D9%88%D9%83%D8%B3%D9%8A_%D8%A7%D9%84%D8%A3%D8%B3%D9%8A%D8%AA%D9%8A%D9%83" title="حمض 4،2-ثنائي كلورو فينوكسي الأسيتيك - àrab" lang="ar" hreflang="ar" data-title="حمض 4،2-ثنائي كلورو فينوكسي الأسيتيك" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%DB%B4%D9%AC%DB%B2-%D8%AF%DB%8C%DA%A9%D9%88%D9%84%D9%88%D8%B1%D9%88%D9%81%D9%86%D9%88%DA%A9%D8%B3%DB%8C%E2%80%8C%D8%A7%D8%B3%D8%AA%DB%8C%DA%A9_%D8%A7%D8%B3%DB%8C%D8%AF" title="۴٬۲-دیکولوروفنوکسی‌استیک اسید - South Azerbaijani" lang="azb" hreflang="azb" data-title="۴٬۲-دیکولوروفنوکسی‌استیک اسید" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Kyselina_2,4-dichlorfenoxyoctov%C3%A1" title="Kyselina 2,4-dichlorfenoxyoctová - txec" lang="cs" hreflang="cs" data-title="Kyselina 2,4-dichlorfenoxyoctová" data-language-autonym="Čeština" data-language-local-name="txec" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/2,4-D" title="2,4-D - danès" lang="da" hreflang="da" data-title="2,4-D" data-language-autonym="Dansk" data-language-local-name="danès" 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/2,4-Dichlorphenoxyessigs%C3%A4ure" title="2,4-Dichlorphenoxyessigsäure - alemany" lang="de" hreflang="de" data-title="2,4-Dichlorphenoxyessigsäure" data-language-autonym="Deutsch" data-language-local-name="alemany" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/2,4-Dichlorophenoxyacetic_acid" title="2,4-Dichlorophenoxyacetic acid - anglès" lang="en" hreflang="en" data-title="2,4-Dichlorophenoxyacetic acid" data-language-autonym="English" data-language-local-name="anglès" 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/Duklorofenokso-acetata_acido" title="Duklorofenokso-acetata acido - esperanto" lang="eo" hreflang="eo" data-title="Duklorofenokso-acetata acido" 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%81cido_2,4-diclorofenoxiac%C3%A9tico" title="Ácido 2,4-diclorofenoxiacético - espanyol" lang="es" hreflang="es" data-title="Ácido 2,4-diclorofenoxiacético" data-language-autonym="Español" data-language-local-name="espanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Azido_2,4-diklorofenoxiazetiko" title="Azido 2,4-diklorofenoxiazetiko - basc" lang="eu" hreflang="eu" data-title="Azido 2,4-diklorofenoxiazetiko" data-language-autonym="Euskara" data-language-local-name="basc" 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/%DB%B4%D9%AC%DB%B2-%D8%AF%DB%8C%E2%80%8C%DA%A9%D9%84%D8%B1%D9%88%D9%81%D9%86%D9%88%DA%A9%D8%B3%DB%8C%E2%80%8C%D8%A7%D8%B3%D8%AA%DB%8C%DA%A9_%D8%A7%D8%B3%DB%8C%D8%AF" title="۴٬۲-دی‌کلروفنوکسی‌استیک اسید - persa" lang="fa" hreflang="fa" data-title="۴٬۲-دی‌کلروفنوکسی‌استیک اسید" 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/2,4-dikloorifenoksietikkahappo" title="2,4-dikloorifenoksietikkahappo - finès" lang="fi" hreflang="fi" data-title="2,4-dikloorifenoksietikkahappo" data-language-autonym="Suomi" data-language-local-name="finès" 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/Acide_2,4-dichloroph%C3%A9noxyac%C3%A9tique" title="Acide 2,4-dichlorophénoxyacétique - francès" lang="fr" hreflang="fr" data-title="Acide 2,4-dichlorophénoxyacétique" data-language-autonym="Français" data-language-local-name="francès" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/2,4-D" title="2,4-D - gallec" lang="gl" hreflang="gl" data-title="2,4-D" data-language-autonym="Galego" data-language-local-name="gallec" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/2,4-%E0%A4%A1%E0%A4%BE%E0%A4%87%E0%A4%95%E0%A5%8D%E0%A4%B2%E0%A5%8B%E0%A4%B0%E0%A5%8B%E0%A4%AB%E0%A4%BF%E0%A4%A8%E0%A5%89%E0%A4%95%E0%A5%8D%E0%A4%B8%E0%A5%80%E0%A4%8F%E0%A4%B8%E0%A4%BF%E0%A4%9F%E0%A4%BF%E0%A4%95_%E0%A4%85%E0%A4%AE%E0%A5%8D%E0%A4%B2" title="2,4-डाइक्लोरोफिनॉक्सीएसिटिक अम्ल - hindi" lang="hi" hreflang="hi" data-title="2,4-डाइक्लोरोफिनॉक्सीएसिटिक अम्ल" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/2,4-Dikl%C3%B3rfenoxiecetsav" title="2,4-Diklórfenoxiecetsav - hongarès" lang="hu" hreflang="hu" data-title="2,4-Diklórfenoxiecetsav" data-language-autonym="Magyar" data-language-local-name="hongarès" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Asam_2,4-Diklorofenoksiasetat" title="Asam 2,4-Diklorofenoksiasetat - indonesi" lang="id" hreflang="id" data-title="Asam 2,4-Diklorofenoksiasetat" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesi" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Acido_2,4-diclorofenossiacetico" title="Acido 2,4-diclorofenossiacetico - italià" lang="it" hreflang="it" data-title="Acido 2,4-diclorofenossiacetico" data-language-autonym="Italiano" data-language-local-name="italià" 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/2,4-%E3%82%B8%E3%82%AF%E3%83%AD%E3%83%AD%E3%83%95%E3%82%A7%E3%83%8E%E3%82%AD%E3%82%B7%E9%85%A2%E9%85%B8" title="2,4-ジクロロフェノキシ酢酸 - japonès" lang="ja" hreflang="ja" data-title="2,4-ジクロロフェノキシ酢酸" data-language-autonym="日本語" data-language-local-name="japonès" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/2,4-%EB%94%94%ED%81%B4%EB%A1%9C%EB%A1%9C%ED%8E%98%EB%85%B9%EC%8B%9C%EC%95%84%EC%84%B8%ED%8A%B8%EC%82%B0" title="2,4-디클로로페녹시아세트산 - coreà" lang="ko" hreflang="ko" data-title="2,4-디클로로페녹시아세트산" data-language-autonym="한국어" data-language-local-name="coreà" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/2,4-dichloorfenoxyazijnzuur" title="2,4-dichloorfenoxyazijnzuur - neerlandès" lang="nl" hreflang="nl" data-title="2,4-dichloorfenoxyazijnzuur" data-language-autonym="Nederlands" data-language-local-name="neerlandès" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/2,4-D" title="2,4-D - noruec bokmål" lang="nb" hreflang="nb" data-title="2,4-D" data-language-autonym="Norsk bokmål" data-language-local-name="noruec bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Kwas_2,4-dichlorofenoksyoctowy" title="Kwas 2,4-dichlorofenoksyoctowy - polonès" lang="pl" hreflang="pl" data-title="Kwas 2,4-dichlorofenoksyoctowy" data-language-autonym="Polski" data-language-local-name="polonès" 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/%C3%81cido_diclorofenoxiac%C3%A9tico" title="Ácido diclorofenoxiacético - portuguès" lang="pt" hreflang="pt" data-title="Ácido diclorofenoxiacético" data-language-autonym="Português" data-language-local-name="portuguès" 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/2,4-%D0%94%D0%B8%D1%85%D0%BB%D0%BE%D1%80%D1%84%D0%B5%D0%BD%D0%BE%D0%BA%D1%81%D0%B8%D1%83%D0%BA%D1%81%D1%83%D1%81%D0%BD%D0%B0%D1%8F_%D0%BA%D0%B8%D1%81%D0%BB%D0%BE%D1%82%D0%B0" title="2,4-Дихлорфеноксиуксусная кислота - rus" lang="ru" hreflang="ru" data-title="2,4-Дихлорфеноксиуксусная кислота" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/2,4-Dihlorofenoksisir%C4%87etna_kiselina" title="2,4-Dihlorofenoksisirćetna kiselina - serbocroat" lang="sh" hreflang="sh" data-title="2,4-Dihlorofenoksisirćetna kiselina" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbocroat" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/2,4-Dihlorofenoksisir%C4%87etna_kiselina" title="2,4-Dihlorofenoksisirćetna kiselina - serbi" lang="sr" hreflang="sr" data-title="2,4-Dihlorofenoksisirćetna kiselina" data-language-autonym="Српски / srpski" data-language-local-name="serbi" 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/2,4-Diklorfenoxi%C3%A4ttiksyra" title="2,4-Diklorfenoxiättiksyra - suec" lang="sv" hreflang="sv" data-title="2,4-Diklorfenoxiättiksyra" data-language-autonym="Svenska" data-language-local-name="suec" 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/2,4-%E0%AE%9F%E0%AF%88%E0%AE%95%E0%AF%81%E0%AE%B3%E0%AF%8B%E0%AE%B0%E0%AF%8B%E0%AE%AA%E0%AF%80%E0%AE%A9%E0%AE%BE%E0%AE%95%E0%AF%8D%E0%AE%9A%E0%AE%BF%E0%AE%AF%E0%AE%9A%E0%AE%BF%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%BF%E0%AE%95%E0%AF%8D_%E0%AE%85%E0%AE%AE%E0%AE%BF%E0%AE%B2%E0%AE%AE%E0%AF%8D" title="2,4-டைகுளோரோபீனாக்சியசிட்டிக் அமிலம் - tàmil" lang="ta" hreflang="ta" data-title="2,4-டைகுளோரோபீனாக்சியசிட்டிக் அமிலம்" data-language-autonym="தமிழ்" data-language-local-name="tàmil" 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%81%E0%B8%A3%E0%B8%94_2,4-%E0%B9%84%E0%B8%94%E0%B8%84%E0%B8%A5%E0%B8%AD%E0%B9%82%E0%B8%A3%E0%B8%9F%E0%B8%B5%E0%B8%99%E0%B8%AD%E0%B8%81%E0%B8%8B%E0%B8%B5%E0%B9%81%E0%B8%AD%E0%B8%8B%E0%B8%B5%E0%B8%95%E0%B8%B4%E0%B8%81" title="กรด 2,4-ไดคลอโรฟีนอกซีแอซีติก - tai" lang="th" hreflang="th" data-title="กรด 2,4-ไดคลอโรฟีนอกซีแอซีติก" data-language-autonym="ไทย" data-language-local-name="tai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/2,4-%E4%BA%8C%E6%B0%AF%E8%8B%AF%E6%B0%A7%E4%B9%99%E9%85%B8" title="2,4-二氯苯氧乙酸 - xinès" lang="zh" hreflang="zh" data-title="2,4-二氯苯氧乙酸" data-language-autonym="中文" data-language-local-name="xinès" 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/Q209222#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</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="Espais de noms"> <div id="p-associated-pages" class="vector-menu 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<li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:Enlla%C3%A7os/%C3%80cid_2,4-diclorofenoxiac%C3%A8tic" title="Una llista de totes les pàgines wiki que enllacen amb aquesta [j]" accesskey="j"><span>Què hi enllaça</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Seguiment/%C3%80cid_2,4-diclorofenoxiac%C3%A8tic" rel="nofollow" title="Canvis recents a pàgines enllaçades des d'aquesta pàgina [k]" accesskey="k"><span>Canvis relacionats</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&oldid=34273670" title="Enllaç permanent a aquesta revisió de la pàgina"><span>Enllaç permanent</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&action=info" title="Més informació sobre aquesta pàgina"><span>Informació de la pàgina</span></a></li><li id="t-cite" class="mw-list-item"><a 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href="/w/index.php?title=Especial:Llibre&bookcmd=book_creator&referer=%C3%80cid+2%2C4-diclorofenoxiac%C3%A8tic"><span>Crea un llibre</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=%C3%80cid_2%2C4-diclorofenoxiac%C3%A8tic&action=show-download-screen"><span>Baixa com a PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&printable=yes" title="Versió per a impressió d'aquesta pàgina [p]" accesskey="p"><span>Versió per a impressora</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"> En altres projectes </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-commons mw-list-item"><a href="https://commons.wikimedia.org/wiki/Category:2,4-Dichlorophenoxyacetic_acid" hreflang="en"><span>Commons</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q209222" title="Enllaç a l'element del repositori de dades connectat [g]" accesskey="g"><span>Element a Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aparença"> <div id="vector-appearance-pinned-container" 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">Aparença</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">amaga</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">De la Viquipèdia, l'enciclopèdia lliure</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ca" dir="ltr"><table class="infobox" style="font-size:90%;width:25em"><caption style="font-weight:bold;color: #202122; background-color: #b0d1ad;"><span style="float:left;"><span class="skin-invert" typeof="mw:File"><a href="/wiki/Fitxer:Test_tube_icon.svg" class="mw-file-description" title="Infotaula de compost químic"><img alt="Infotaula de compost químic" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Test_tube_icon.svg/22px-Test_tube_icon.svg.png" decoding="async" width="22" height="21" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/be/Test_tube_icon.svg/33px-Test_tube_icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/be/Test_tube_icon.svg/44px-Test_tube_icon.svg.png 2x" data-file-width="512" data-file-height="481" /></a></span></span>Àcid 2,4-diclorofenoxiacètic</caption><tbody><tr><td colspan="2" class="infobox-full-data infobox-data" style="text-align:center"><span typeof="mw:File"><a href="/wiki/Fitxer:2,4-Dichlorophenoxyacetic-acid-3D-balls-2.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/2%2C4-Dichlorophenoxyacetic-acid-3D-balls-2.png/300px-2%2C4-Dichlorophenoxyacetic-acid-3D-balls-2.png" decoding="async" width="300" height="198" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/2%2C4-Dichlorophenoxyacetic-acid-3D-balls-2.png/450px-2%2C4-Dichlorophenoxyacetic-acid-3D-balls-2.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/2%2C4-Dichlorophenoxyacetic-acid-3D-balls-2.png/600px-2%2C4-Dichlorophenoxyacetic-acid-3D-balls-2.png 2x" data-file-width="2000" data-file-height="1317" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Substància química</th><td class="infobox-data"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q113145171" class="extiw" title="d:Special:EntityPage/Q113145171">tipus d'entitat química</a> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P31" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Massa molecular</th><td class="infobox-data">219,969 Da <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2067" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Trobat en el tàxon</th><td class="infobox-data"><div style="text-align:start;"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q10510147" class="extiw" title="d:Special:EntityPage/Q10510147">Guanomyces polythrix</a>, <a href="https://www.wikidata.org/wiki/Special:EntityPage/Q7187120" class="extiw" title="d:Special:EntityPage/Q7187120">Phoma herbarum</a> i <a href="/wiki/Tabaquera" title="Tabaquera">tabaquera</a> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P703" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span> </div></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center;color: #202122; background-color: #b0d1ad;">Estructura química</th></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Fórmula química</th><td class="infobox-data"><big>C₈H₆Cl₂O₃</big> <span class="penicon" data-bridge-edit-flow="single-best-value"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P274" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><td colspan="2" class="infobox-full-data infobox-data" style="text-align:center"><span typeof="mw:File"><a href="/w/index.php?title=Fitxer:2-(2,4-dichlorophenoxy)acetic_acid_200.svg&lang=ca" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/2-%282%2C4-dichlorophenoxy%29acetic_acid_200.svg/langca-300px-2-%282%2C4-dichlorophenoxy%29acetic_acid_200.svg.png" decoding="async" width="300" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c2/2-%282%2C4-dichlorophenoxy%29acetic_acid_200.svg/langca-450px-2-%282%2C4-dichlorophenoxy%29acetic_acid_200.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c2/2-%282%2C4-dichlorophenoxy%29acetic_acid_200.svg/langca-600px-2-%282%2C4-dichlorophenoxy%29acetic_acid_200.svg.png 2x" data-file-width="215" data-file-height="105" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;"><a href="https://www.wikidata.org/wiki/Special:EntityPage/P233" class="extiw" title="d:Special:EntityPage/P233">SMILES canònic</a></th><td class="infobox-data"><div class="mw-collapsible mw-collapsed" style="border:none; padding: 0;"><div class="" style="width:100%;" align="left"></div><div class="mw-collapsible-content" style="text-align:left;"> <a rel="nofollow" class="external text" href="http://cdkdepict-openchem.rhcloud.com/depict/bow/svg?smi=%241&zoom=2.0&annotate=none">Model 2D</a><br />C1=CC(=C(C=C1Cl)Cl)OCC(=O)O <span class="penicon" data-bridge-edit-flow="single-best-value"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P233" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span> </div></div></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;"><a href="https://www.wikidata.org/wiki/Special:EntityPage/P234" class="extiw" title="d:Special:EntityPage/P234">Identificador InChI</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="http://chemapps.stolaf.edu/jmol/jmol.php?&model=InChI=InChI=1S/C8H6Cl2O3/c9-5-1-2-7(6(10)3-5)13-4-8(11)12/h1-3H,4H2,(H,11,12)">Model 3D</a> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P234" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center;color: #202122; background-color: #b0d1ad;">Propietat</th></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Densitat</th><td class="infobox-data">1,57 g/cm³ (a 20 ℃, <a href="/wiki/S%C3%B2lid" title="Sòlid">sòlid</a>) <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2054" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">PKa</th><td class="infobox-data">2,81 (a valor desconegut) <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P1117" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Solubilitat</th><td class="infobox-data">0,05 g/100 g (<a href="/wiki/Aigua" title="Aigua">aigua</a>, 20 ℃) <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2177" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Punt de fusió</th><td class="infobox-data">138 ℃ <br />138 ℃ <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2101" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Punt d'ebullició</th><td class="infobox-data">200 ℃ (a valor desconegut) <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2102" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Pressió de vapor</th><td class="infobox-data">0,4 mmHg (a 160 ℃) <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2119" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th colspan="2" class="infobox-header" style="text-align:center;color: #202122; background-color: #b0d1ad;">Perill</th></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">Límit d'exposició mitjana ponderada en el temps</th><td class="infobox-data">10 mg/m³ (10 h, <a href="/wiki/Estats_Units_d%27Am%C3%A8rica" title="Estats Units d'Amèrica">Estats Units d'Amèrica</a>) <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2404" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr><tr><th scope="row" class="infobox-label" style="text-align:left;color: #202122; background-color: #eeeeee; width: 40%;">IDLH</th><td class="infobox-data">100 mg/m³ <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q209222?uselang=ca#P2129" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span></td></tr></tbody></table> <p>L'<b>àcid 2,4-diclorofenoxiacétic</b> o senzillament <b>2,4-D</b> és un producte químic, una <a href="/wiki/Auxina" title="Auxina">auxina</a> sintètica, utilitzat en <a href="/wiki/Agricultura" title="Agricultura">agricultura</a> com a <a href="/wiki/Herbicida" title="Herbicida">herbicida</a> i <a href="/wiki/Fitoregulador" title="Fitoregulador">fitoregulador</a>. També va formar part de l'<a href="/wiki/Agent_taronja" title="Agent taronja">agent taronja</a> utilitzat a la <a href="/wiki/Guerra_del_Vietnam" title="Guerra del Vietnam">Guerra del Vietnam</a>. Actua damunt els mecanismes que regulen el creixement vegetatiu de les plantes. Tant l'àcid com els seus èsters i sals poden ser utilitzats com a fitorreguladors i com herbicides variant el moment de l'aplicació i la dosi, però a la pràctica, únicament alguns èsters i sals s'utilitzen com a herbicides i alguns èsters com a fitoreguladors. Es consideren cultius sensibles: <a href="/wiki/Cot%C3%B3" title="Cotó">cotó</a>, <a href="/wiki/C%C3%ADtric" title="Cítric">cítrics</a>, <a href="/wiki/Cruc%C3%ADferes" class="mw-redirect" title="Crucíferes">crucíferes</a>, <a href="/wiki/Estramoni" title="Estramoni">estramoni</a>, fruiters, <a href="/wiki/Gira-sol" title="Gira-sol">gira-sol</a>, <a href="/wiki/Lletuga" title="Lletuga">lletuga</a>, <a href="/wiki/Lleguminoses" class="mw-redirect" title="Lleguminoses">lleguminoses</a>, olivera, <a href="/wiki/Cogombre" title="Cogombre">cogombre</a>, <a href="/wiki/Remolatxa" class="mw-redirect" title="Remolatxa">remolatxa</a>, <a href="/wiki/Tabac" title="Tabac">tabac</a>, <a href="/wiki/Tomatiguera" class="mw-redirect" title="Tomatiguera">tomatiguera</a>, vinya i cultius de flors ornamentals. La seva utilització com a herbicida, normalment és en <a href="/wiki/Civada" title="Civada">civada</a>, <a href="/wiki/Ordi" title="Ordi">ordi</a>, <a href="/wiki/S%C3%A8gol" title="Sègol">sègol</a>, pastures, <a href="/wiki/Blat" title="Blat">blat</a> i <a href="/wiki/Triticale" title="Triticale">triticale</a>. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Història"><span id="Hist.C3.B2ria"></span>Història</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&action=edit&section=1" title="Modifica la secció: Història"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>El 2,4-D va ser co-descobert independentment als Estats Units i al Regne Unit l'any 1941. Els dos equips de recerca involucrats van ser el "Templeman and Colleagues at ICI" (USA) i el "Nutman and Collaborators at <a href="/wiki/Rothamsted_Experimental_Station" class="mw-redirect" title="Rothamsted Experimental Station">Rothamsted Experimental Station</a>" (UK). En tots dos casos formaven part d'un esforç clandestí governamental durant la Segona Guerra Mundial per a obtenir un producte per a ser usat en aquella guerra. </p><p>La propietat de matar les males herbes no era pas l'objectiu. El 2-4D no va ser usat en agricultura fins a l'any 1945.<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> Es va produir comercialment a partir de 1946, essent el primer herbicida selectiu que va tenir èxit, la selectivitat és que no mata la majoria de les plantes <a href="/wiki/Monocotiled%C3%B2nies" title="Monocotiledònies">monocotiledònies</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Conreus_genèticament_modificats"><span id="Conreus_gen.C3.A8ticament_modificats"></span>Conreus genèticament modificats</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&action=edit&section=2" title="Modifica la secció: Conreus genèticament modificats"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Dow_Chemical_Company" title="Dow Chemical Company">Dow</a> ha modificat genèticament la <a href="/wiki/Soia" title="Soia">soia</a>, una planta dicotiledònia, per a fer-la resistent al 2,4-D. Ho ha fet inserint un gen bacterià (<i>dioxigenasa ariloxialcanoat</i>).<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> Usant una combinació del 2,4-D i el <a href="/wiki/Glifosat" title="Glifosat">glifosat</a> Dow tracta d'usar-la com alternativa als conreus <a href="/w/index.php?title=Roundup_Ready&action=edit&redlink=1" class="new" title="Roundup Ready (encara no existeix)">Roundup Ready</a> (conreus resistents al glifosat). Aquest tipus de soia encara està pendent d'aprovació.<sup id="cite_ref-NYTDOWCORN_3-0" class="reference"><a href="#cite_note-NYTDOWCORN-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&action=edit&section=3" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">J. H. Quastel, "2,4-dichlorophenoxyacetic acid (2,4-D) as a selective herbicide," <i>Agricultural Control Chemicals</i> (Washington, D.C.: American Chemical Society, 1950), Chapter 45, pages 244-249.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFWrightShanWalshLira2010"><span style="font-variant: small-caps;">Wright</span>, TR; <span style="font-variant: small-caps;">Shan</span>, G; <span style="font-variant: small-caps;">Walsh</span>, TA; <span style="font-variant: small-caps;">Lira</span>, JM; <span style="font-variant: small-caps;">Cui</span>, C; <span style="font-variant: small-caps;">Song</span>, P; <span style="font-variant: small-caps;">Zhuang</span>, M; <span style="font-variant: small-caps;">Arnold</span>, NL; <span style="font-variant: small-caps;">Lin</span>, G «Robust crop resistance to broadleaf and grass herbicides provided by aryloxyalkanoate dioxygenase transgenes». <i>Proceedings of the National Academy of Sciences of the United States of America</i>, 107, 47, 23-11-2010, pàg. 20240–5. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>: <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2010PNAS..10720240W">2010PNAS..10720240W</a>. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1073%2Fpnas.1013154107">10.1073/pnas.1013154107</a>. <a href="/wiki/PubMed" title="PubMed">PMC</a>: <a rel="nofollow" class="external text" href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996712">2996712</a>. <a href="/wiki/PubMed" title="PubMed">PMID</a>: <a href="https://www.ncbi.nlm.nih.gov/pubmed/21059954?dopt=Abstract" class="extiw" title="pmid:21059954">21059954</a>.</span></span> </li> <li id="cite_note-NYTDOWCORN-3"><span class="mw-cite-backlink"><a href="#cite_ref-NYTDOWCORN_3-0">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">Andrew Pollack «<a rel="nofollow" class="external text" href="http://www.nytimes.com/2012/04/26/business/energy-environment/dow-weed-killer-runs-into-opposition.html">Dow Weed Killer, Nearing Approval, Runs Into Opposition</a>». <i>The New York Times</i>, 25-04-2012 [Consulta: 25 abril 2012].</span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Enllaços_externs"><span id="Enlla.C3.A7os_externs"></span>Enllaços externs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%C3%80cid_2,4-diclorofenoxiac%C3%A8tic&action=edit&section=4" title="Modifica la secció: Enllaços externs"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r33663753">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid 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