{"id":33275,"date":"2021-03-16T12:51:23","date_gmt":"2021-03-16T12:51:23","guid":{"rendered":"https:\/\/www.alquera.com\/?page_id=33275"},"modified":"2021-09-12T13:46:10","modified_gmt":"2021-09-12T13:46:10","slug":"usos","status":"publish","type":"page","link":"https:\/\/www.alquera.com\/fr\/acido-oxalico\/usos\/","title":{"rendered":"Usages de l'acide oxalique."},"content":{"rendered":"<p>Le\u00a0<a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/\"><strong>acide oxalique<\/strong><\/a>\u00a0est un acide carboxylique de formule H<sub>2<\/sub>C<sub>2<\/sub>O<sub>4<\/sub>\u00a0peut \u00e9galement \u00eatre d\u00e9crit comme HOOCCOOH, c'est un acide organique satur\u00e9, \u00e0 cha\u00eene normale, consid\u00e9r\u00e9 comme tr\u00e8s fort. Parmi ses propri\u00e9t\u00e9s les plus importantes, il est soluble dans l'alcool et dans l'eau, cristallise dans l'eau sous forme dihydrat\u00e9e avec la formule C<sub>2<\/sub>H<sub>2<\/sub>O<sub>4<\/sub>.2H<sub>2<\/sub>O, son point de fusion hydrat\u00e9 est de 101,5\u00a0<sup>0<\/sup>C. Lorsqu'il est chauff\u00e9, il se d\u00e9compose, lib\u00e9rant du dioxyde de carbone (CO ).<sub>2<\/sub>), le monoxyde de carbone (CO) et l'eau.<\/p>\n<p><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/usos\/acido-oxalico-2\/\" rel=\"attachment wp-att-33305\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-33305 aligncenter\" src=\"https:\/\/www.alquera.com\/wp-content\/uploads\/2021\/03\/ACIDO-OXALICO.png\" alt=\"usos \u00e1cido ox\u00e1lico\" width=\"300\" height=\"214\" \/><\/a><\/p>\n<p>Il se trouve naturellement sous forme d'oxalate de calcium ou de potassium, dans les racines et les rhizomes de nombreuses plantes, il est pr\u00e9sent en petites quantit\u00e9s dans de nombreux aliments, tels que le cacao, les noix, les haricots et \u00e9galement dans les feuilles de nombreuses plantes telles que les \u00e9pinards, le persil, les blettes, etc.....<\/p>\n<p>Il existe plusieurs fa\u00e7ons de produire industriellement de l'acide oxalique, l'une d'entre elles est l'oxydation des hydrates de carbone tels que l'amidon, il peut \u00e9galement \u00eatre produit avec du monoxyde de carbone et de l'hydroxyde de sodium, mais les plus couramment utilis\u00e9es industriellement sont la premi\u00e8re avec deux oxydations successives, en utilisant l'acide nitrique et l'oxyg\u00e8ne de l'air, et la seconde \u00e0 partir du m\u00e9thanoate de sodium.<\/p>\n<p>Ses principales caract\u00e9ristiques physiques sont : go\u00fbt amer, solide cristallin incolore, partiellement soluble dans l'eau, l'\u00e9thanol et les solvants.<\/p>\n<h2>Utilisations de l'acide oxalique<\/h2>\n<p>Parmi les principales utilisations et applications de\u00a0<b>acide oxalique dihydrat\u00e9<\/b>\u00a0sont :<\/p>\n<ul>\n<li>Traitement des surfaces m\u00e9talliques.<\/li>\n<li><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/quitar-oxido\/\">\u00c9limination de la rouille sur les m\u00e9taux<\/a>notamment sur les pi\u00e8ces chrom\u00e9es, largement utilis\u00e9es sur les bicyclettes.<\/li>\n<li>Dans la construction, il est utilis\u00e9 pour\u00a0<a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/pulir-suelos\/\">polissage des sols<\/a>le marbre et d'autres surfaces.<\/li>\n<li>En navigation, pour <a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/limpieza-fibra-vidrio\/\">nettoyage de la fibre de verre<\/a>.<\/li>\n<li>Sur\u00a0<a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/apicultura\/\">apiculture<\/a>\u00a0\u00e9radique l'acarien varroa qui attaque les abeilles.<\/li>\n<li>Blanchiment et protection des textiles, du bois et du cuir.<\/li>\n<li>Fixation des colorants dans le tissu de laine.<\/li>\n<li>Fabrication de mati\u00e8res plastiques.<\/li>\n<li>En gravim\u00e9trie, il est utilis\u00e9 pour la pr\u00e9cipitation de l'argent, de l'or, du cuivre, du mercure, etc.<\/li>\n<li>Comme agent de nettoyage pour les salles de bains, les cuisines, les carreaux, les sols, etc. dans les m\u00e9nages et l'industrie.<\/li>\n<li>Dans la lessive, il est utilis\u00e9 pour enlever les taches et blanchir.<\/li>\n<\/ul>\n<h2>Propri\u00e9t\u00e9s physiques\/chimiques<\/h2>\n<table>\n<tbody>\n<tr>\n<th class=\"cabecera qu\u00edmica\" colspan=\"3\">\n<div class=\"noprint\"><\/div>\n<div class=\"noprint\"><\/div>\n<p>ACIDE OXALIQUE OU ACIDE \u00c9THANEDIO\u00cfQUE<\/th>\n<\/tr>\n<tr>\n<th colspan=\"3\">FORMULE CHIMIQUE<\/th>\n<\/tr>\n<tr>\n<th scope=\"row\">FORMULE SEMI-D\u00c9VELOPP\u00c9E<\/th>\n<td colspan=\"2\">HOOC-COOH<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">FORMULE MOL\u00c9CULAIRE<\/th>\n<td colspan=\"2\">C<sub>2<\/sub>H<sub>2<\/sub>O<sub>4<\/sub><\/td>\n<\/tr>\n<tr>\n<th colspan=\"3\">IDENTIFICATEURS<\/th>\n<\/tr>\n<tr>\n<th scope=\"row\">NUM\u00c9RO CAS<\/th>\n<td colspan=\"2\">144-62-7<\/td>\n<\/tr>\n<tr>\n<th colspan=\"3\">PROPRI\u00c9T\u00c9S PHYSIQUES<\/th>\n<\/tr>\n<tr>\n<th scope=\"row\">ASPECT<\/th>\n<td colspan=\"2\">Cristaux blancs\/poussi\u00e8re<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">DENSIT\u00c9<\/th>\n<td colspan=\"2\">1900 kg\/m<sup>3<\/sup>1,9 g\/cm<sup>3<\/sup><\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">MOLAR MASS<\/th>\n<td colspan=\"2\">90,03 g\/mol<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">POINT DE FUSION<\/th>\n<td colspan=\"2\">374,65 K (102 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">POINT D'\u00c9BULLITION<\/th>\n<td colspan=\"2\">638,15 K (365 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">POINT DE D\u00c9COMPOSITION<\/th>\n<td colspan=\"2\">462,65 K (190 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<th colspan=\"3\">PROPRI\u00c9T\u00c9S CHIMIQUES<\/th>\n<\/tr>\n<tr>\n<th scope=\"row\">ACIDIT\u00c9<\/th>\n<td colspan=\"2\">1,19 pK<sub>a<\/sub><\/td>\n<\/tr>\n<tr>\n<th scope=\"row\">SOLUBILIT\u00c9 DANS L'EAU<\/th>\n<td colspan=\"2\">9,5 g\/100 mL (15 \u00b0C)<\/td>\n<\/tr>\n<tr>\n<th colspan=\"3\"><\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h2>Pr\u00e9cautions d'emploi\u00a0<strong>d'acide oxalique dihydrat\u00e9<\/strong><\/h2>\n<p>Bien que son utilisation soit tr\u00e8s courante, il faut tenir compte du fait qu'il s'agit d'un acide et qu'il faut donc prendre toutes les pr\u00e9cautions n\u00e9cessaires lors de sa manipulation, en portant toujours des gants et en \u00e9vitant tout contact avec la mati\u00e8re. Il provoque de fortes irritations dans la bouche, l'\u0153sophage, l'estomac et provoque des l\u00e9sions r\u00e9nales, \u00e0 haute dose il est mortel car il cr\u00e9e une obstruction r\u00e9nale et des convulsions, il est le principal composant des calculs r\u00e9naux. Il est facilement absorb\u00e9 par les muqueuses et la peau et provoque des troubles de la circulation sanguine et des l\u00e9sions r\u00e9nales. Il s'agit d'un irritant oculaire grave et un contact prolong\u00e9 provoque des dommages irr\u00e9versibles.<\/p>\n<h3 class=\"widget-title\">Acheter <\/h3><div><div class=\"woocommerce\"><ul class=\"products columns-4\">\n<li class=\"desktop-align-left tablet-align-left mobile-align-left ast-product-gallery-layout-horizontal-slider ast-magnify-disabled ast-product-single-variable ast-product-tabs-layout-horizontal ast-qv-on-image product type-product post-495 status-publish first instock product_cat-productos-experimentos product_cat-productos has-post-thumbnail taxable shipping-taxable purchasable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/www.alquera.com\/fr\/permanganato-de-potasio\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/www.alquera.com\/wp-content\/uploads\/2016\/01\/permanganato-200g-foto-nueva-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"permanganato 200g\" srcset=\"https:\/\/www.alquera.com\/wp-content\/uploads\/2016\/01\/permanganato-200g-foto-nueva-300x300.png 300w, https:\/\/www.alquera.com\/wp-content\/uploads\/2016\/01\/permanganato-200g-foto-nueva-150x150.png 150w, https:\/\/www.alquera.com\/wp-content\/uploads\/2016\/01\/permanganato-200g-foto-nueva-12x12.png 12w, https:\/\/www.alquera.com\/wp-content\/uploads\/2016\/01\/permanganato-200g-foto-nueva-100x100.png 100w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">Permanganate de Potassium<\/h2><div class=\"review-rating\"><div class=\"star-rating\"><span style=\"width:100%\" data-no-translation=\"\" data-trp-gettext=\"\">Note <strong class=\"rating\">5.00<\/strong> sur 5<\/span><\/div><\/div>\n<\/a><a href=\"https:\/\/www.alquera.com\/fr\/permanganato-de-potasio\/\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_495\" data-quantity=\"1\" class=\"button product_type_variable add_to_cart_button\" data-product_id=\"495\" data-product_sku=\"AL100111\" aria-label=\"S\u00e9lectionner les options pour \u201cPermanganato de Potasio\u201d\" rel=\"nofollow\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\">Choix des options<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_495\" class=\"screen-reader-text\">\n\t\tCe produit a plusieurs variations. Les options peuvent \u00eatre choisies sur la page du produit\t<\/span>\n<\/li>\n<\/ul>\n<\/div><\/div>\n<p class=\"widget-title\">Lire la suite<\/p><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/\">Acide oxalique<\/a>\n<!-- Page-list plugin v.5.9 wordpress.org\/plugins\/page-list\/ -->\n<ul class=\"page-list siblings-page-list\">\n<li class=\"page_item page-item-33282 menu-item\"><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/apicultura\/\" class=\"menu-link\">L'acide oxalique en apiculture<\/a><\/li>\n<li class=\"page_item page-item-33336 menu-item\"><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/limpieza-fibra-vidrio\/\" class=\"menu-link\">Nettoyage de la fibre de verre<\/a><\/li>\n<li class=\"page_item page-item-33280 menu-item\"><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/pulir-suelos\/\" class=\"menu-link\">Polissage des sols \u00e0 l'acide oxalique<\/a><\/li>\n<li class=\"page_item page-item-33277 menu-item\"><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/quitar-oxido\/\" class=\"menu-link\">Antirouille \u00e0 l'acide oxalique<\/a><\/li>\n<li class=\"page_item page-item-33275 menu-item\"><a href=\"https:\/\/www.alquera.com\/fr\/acido-oxalico\/usos\/\" class=\"menu-link\">Usages de l'acide oxalique.<\/a><\/li>\n\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>El\u00a0acido ox\u00e1lico\u00a0es un acido carbox\u00edlico cuya f\u00f3rmula es H2C2O4\u00a0tambi\u00e9n se le puede describir como HOOCCOOH, es un \u00e1cido org\u00e1nico saturado, de cadena normal, considerado muy fuerte. Entre sus propiedades m\u00e1s importantes tenemos que es soluble en el alcohol y agua, cristaliza en el agua en forma dihidratada cuya f\u00f3rmula es C2H2O4.2H2O, su punto de fusi\u00f3n [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":33273,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-33275","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.1 (Yoast SEO v27.1.1) - 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