{"id":1597,"date":"2024-08-25T18:04:53","date_gmt":"2024-08-25T16:04:53","guid":{"rendered":"https:\/\/antoine-escola.fr\/?p=1597"},"modified":"2025-09-28T12:18:46","modified_gmt":"2025-09-28T10:18:46","slug":"recristallisation","status":"publish","type":"post","link":"https:\/\/antoine-escola.fr\/index.php\/2024\/08\/25\/recristallisation\/","title":{"rendered":"Recristalliser un solide impur"},"content":{"rendered":"\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>La <strong>recristallisation <\/strong>est une technique courante de purification des solides bas\u00e9e sur la diff\u00e9rence de solubilit\u00e9 de ces derniers dans un solvant \u00e0 une temp\u00e9rature donn\u00e9e.<\/p>\n\n\n\n<p>La recristallisation permet uniquement de purifier des compos\u00e9s <strong>solides<\/strong>, les compos\u00e9s liquides peuvent quant \u00e0 eux \u00eatre purifi\u00e9s par distillation.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Principe g\u00e9n\u00e9ral :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Verser un minimum de solvant (EtOH, EtOAc, MeCN, Et<sub>2<\/sub>O&#8230;) sur le solide impur<\/li>\n\n\n\n<li>Chauffer jusqu&rsquo;\u00e0 solubilisation du m\u00e9lange<\/li>\n\n\n\n<li>Laisser refroidir le plus lentement possible le m\u00e9lange (sans agitation et sans choc thermique)<\/li>\n\n\n\n<li>Dans une recristallisation r\u00e9ussie, les impuret\u00e9s restent solubilis\u00e9es dans le solvant tandis que le compos\u00e9 solide purifi\u00e9 pr\u00e9cipite<\/li>\n\n\n\n<li>Filtrer le m\u00e9lange sur B\u00fcchner et rincer les cristaux avec un minimum de solvant <strong>froid<\/strong><\/li>\n<\/ul>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Vid\u00e9o explicative :<\/strong><\/p>\n\n\n\n<p><em>En cours de cr\u00e9ation !<\/em><\/p>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"403\" height=\"141\" src=\"https:\/\/antoine-escola.fr\/wp-content\/uploads\/2023\/01\/image.png\" alt=\"\" class=\"wp-image-120\" style=\"width:94px;height:33px\" srcset=\"https:\/\/antoine-escola.fr\/wp-content\/uploads\/2023\/01\/image.png 403w, https:\/\/antoine-escola.fr\/wp-content\/uploads\/2023\/01\/image-300x105.png 300w\" sizes=\"auto, (max-width: 403px) 100vw, 403px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"has-text-align-center\">Cet article est mis \u00e0 disposition selon les termes de la <a href=\"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/\" target=\"_blank\" rel=\"noreferrer noopener\">Licence Creative Commons Attribution &#8211; Pas d&rsquo;Utilisation Commerciale &#8211; Pas de Modification 4.0 International<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La recristallisation est une technique courante de purification des solides bas\u00e9e sur la diff\u00e9rence de solubilit\u00e9 de ces derniers dans un solvant \u00e0 une temp\u00e9rature donn\u00e9e. La recristallisation permet uniquement de purifier des compos\u00e9s solides, les compos\u00e9s liquides peuvent quant \u00e0 eux \u00eatre purifi\u00e9s par distillation. Principe g\u00e9n\u00e9ral : Vid\u00e9o explicative : En cours de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1597","post","type-post","status-publish","format-standard","hentry","category-manipulation"],"_links":{"self":[{"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/posts\/1597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1597"}],"version-history":[{"count":6,"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/posts\/1597\/revisions"}],"predecessor-version":[{"id":2074,"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/posts\/1597\/revisions\/2074"}],"wp:attachment":[{"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/antoine-escola.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}