{"id":3528,"date":"2021-02-05T13:18:22","date_gmt":"2021-02-05T13:18:22","guid":{"rendered":"https:\/\/longchangchemical.com\/?post_type=product&#038;p=3528"},"modified":"2025-12-23T07:01:51","modified_gmt":"2025-12-23T07:01:51","slug":"cyclopentanone-cas-120-92-3","status":"publish","type":"product","link":"https:\/\/longchangchemical.com\/fr\/product\/cyclopentanone-cas-120-92-3\/","title":{"rendered":"Cyclopentanone CAS 120-92-3"},"content":{"rendered":"<h1><strong>Cyclopentanone CAS 120-92-3<\/strong><\/h1>\n<h4>Densit\u00e9 : 0,951 g\/cm<\/h4>\n<h4>Point de fusion : - 51 C<\/h4>\n<h4>Point d'\u00e9bullition : 130-131 C<\/h4>\n<h4>Indice de r\u00e9fraction : 1.436-1.438<\/h4>\n<h4>Point d'\u00e9clair : 31 C<\/h4>\n<h4>Solubilit\u00e9 dans l'eau : insoluble dans l'eau.<\/h4>\n<p>&nbsp;<\/p>\n<h2><strong>ACO de la cyclopentanone<\/strong><\/h2>\n<table class=\"table-1\" cellspacing=\"0\">\n<tbody>\n<tr>\n<td>\n<h4>Objet<\/h4>\n<\/td>\n<td>\n<h4>Standard<\/h4>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h4>Apparence<\/h4>\n<\/td>\n<td>\n<h4>Liquide transparent<\/h4>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h4>Couleur (No Hazen)<\/h4>\n<\/td>\n<td>\n<h4>\u226610<\/h4>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h4>Puret\u00e9 (GC )<\/h4>\n<\/td>\n<td>\n<h4>\u226799.5%<\/h4>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h4>Indice d'acidit\u00e9 (mgKOH\/g)<\/h4>\n<\/td>\n<td>\n<h4>\u22660.5%<\/h4>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h4>Impuret\u00e9s totales<\/h4>\n<\/td>\n<td>\n<h4>\u22660.5%<\/h4>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<h4>Teneur en eau<\/h4>\n<\/td>\n<td>\n<h4>\u22660.5%<\/h4>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong>Utilisation de la cyclopentanone<\/strong><\/h2>\n<h4>1. En utilisant le cyclopentanone et le n-val\u00e9rald\u00e9hyde comme mati\u00e8res premi\u00e8res, il subit d'abord une condensation d'aldol puis une d\u00e9shydratation pour produire du pentylcyclopentanone, suivie d'une hydrog\u00e9nation catalytique s\u00e9lective pour produire du pentylcyclopentanone, qui est puissant. Il peut \u00eatre utilis\u00e9 dans les formulations de parfums chimiques quotidiens. Le dosage peut \u00eatre inf\u00e9rieur \u00e0 20%. L'IFRA n'a pas de restrictions.<\/h4>\n<h4>2. En utilisant le n-hexanal et le cyclopentanone comme mati\u00e8res premi\u00e8res, on proc\u00e8de d'abord \u00e0 une condensation, puis \u00e0 une hydrog\u00e9nation s\u00e9lective pour obtenir l'hexylcyclopentanone. L'hexylcyclopentanone a un fort parfum de jasmin et un parfum fruit\u00e9, qui peut \u00eatre utilis\u00e9 dans les parfums. Dans diverses autres formules d'ar\u00f4mes chimiques quotidiens, le dosage est compris entre 5%. L'IFRA n'a aucune restriction.<\/h4>\n<h4>3. Le 1-pent\u00e8ne ou le 1-hept\u00e8ne obtenu par pyrolyse de la paraffine ou par d\u00e9shydratation de l'alcool correspondant est utilis\u00e9 comme mati\u00e8re premi\u00e8re et, en pr\u00e9sence de peroxyde de di-tert-butyle comme initiateur, il subit une r\u00e9action d'addition radicale avec le cyclopentanone pour former le 2 -Pentylcyclopentanone (ou 2-heptylcyclopentanone), qui devient le \u03b4-d\u00e9canolactone (ou \u03b4-laurolactone) apr\u00e8s dilatation du cycle par oxydation.<\/h4>\n<h4>4. La voie de synth\u00e8se utilisant la cyclopentanone comme mati\u00e8re premi\u00e8re est celle qui pr\u00e9sente la plus grande valeur de production industrielle. La cyclopentanone subit d'abord une condensation aldolique avec le n-val\u00e9rald\u00e9hyde, le produit de condensation devient la 2-pentylcyclopentanone apr\u00e8s d\u00e9shydratation et hydrog\u00e9nation s\u00e9lective, et enfin la \u03b4-d\u00e9canolactone apr\u00e8s expansion oxydative du cycle.<\/h4>\n<h4>5. Le delta-d\u00e9canolactone est principalement utilis\u00e9 dans les formulations d'ar\u00f4mes comestibles. Il est consid\u00e9r\u00e9 comme ayant la saveur caract\u00e9ristique de la cr\u00e8me naturelle. Auparavant, les parfumeurs ont longtemps \u00e9t\u00e9 limit\u00e9s \u00e0 l'utilisation de parfums monom\u00e8res tels que le diac\u00e9tyle et la vanilline comme mati\u00e8re premi\u00e8re principale pour la formulation d'ar\u00f4mes de cr\u00e8me. Cependant, les gens estiment g\u00e9n\u00e9ralement que l'ar\u00f4me de cr\u00e8me pr\u00e9par\u00e9 est de loin inf\u00e9rieur aux produits naturels en termes de go\u00fbt ou de saveur. Seule l'utilisation de la \u03b4-d\u00e9canolactone permet d'obtenir un ar\u00f4me de cr\u00e8me vif, en particulier lorsque la \u03b4-d\u00e9canolactone et la \u03b4-laurolactone sont utilis\u00e9es ensemble comme principales mati\u00e8res premi\u00e8res de parfum, l'ar\u00f4me et l'effet de l'ar\u00f4me de cr\u00e8me formul\u00e9 seront meilleurs.<\/h4>\n<h4>6. Prendre le cyclopentanone et le val\u00e9rald\u00e9hyde comme mati\u00e8res premi\u00e8res, condenser pour produire le 2-(1-hydroxy)pentylcyclopentanone, r\u00e9agir avec le malonate de dim\u00e9thyle, puis hydrolyser, d\u00e9carboxyler et est\u00e9rifier \u00e0 160\uff5e180\u2103 , On peut obtenir l'ester m\u00e9thylique du dihydrojasmonate. Le dihydrojasmonate de m\u00e9thyle est une \u00e9pice alimentaire dont l'utilisation est temporairement autoris\u00e9e par la norme GB2760-1996 de mon pays. Son ar\u00f4me est meilleur que celui du jasmonate de m\u00e9thyle naturel et ses propri\u00e9t\u00e9s sont relativement stables.<\/h4>\n<h4><\/h4>\n<h2><strong>Emballage et exp\u00e9dition de la cyclopentanone<\/strong><\/h2>\n<h4>Emballage : 200kg\/tambour<\/h4>\n<h4>Livraison : dans un d\u00e9lai de 3 \u00e0 5 jours ouvrables<\/h4>\n<p>&nbsp;<\/p>\n<h2><strong>Stockage de la cyclopentanone<\/strong><\/h2>\n<h4>\u00c9viter la lumi\u00e8re et le s\u00e9chage.<\/h4>\n<p>&nbsp;<\/p>\n<h2><strong><b>Contactez-nous d\u00e8s maintenant !<\/b><\/strong><\/h2>\n<h4><strong><b>Si vous avez besoin de COA, MSDS ou TDS, veuillez remplir vos coordonn\u00e9es dans le formulaire ci-dessous, nous vous contacterons g\u00e9n\u00e9ralement dans les 24 heures. Vous pouvez \u00e9galement m'envoyer un courriel <span style=\"color: #0000ff;\"><a style=\"color: #0000ff;\" href=\"mailto:info@longchangchemical.com\">info@longchangchemical.com<\/a><\/span> pendant les heures de travail ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) ou utilisez le chat en direct du site web pour obtenir une r\u00e9ponse rapide.<\/b><\/strong><\/h4>","protected":false},"excerpt":{"rendered":"<h4>Nom chimique : Cyclopentanone<\/h4>\n<h4>Num\u00e9ro CAS : 120-92-3<\/h4>\n<h4>Formule mol\u00e9culaire : C5H8O<\/h4>\n<h4>Poids mol\u00e9culaire : 84,12<\/h4>\n<h4>Aspect : Liquide transparent<\/h4>\n<h4>Essai : 99.5%<\/h4>\n<h4>Structure mol\u00e9culaire :<img decoding=\"async\" title=\"image.png\" src=\"https:\/\/www.longchangchemical.com\/wp-content\/uploads\/product-details\/20200611251570.png\" alt=\"image.png\" \/><\/h4>","protected":false},"featured_media":4330,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[69],"product_tag":[],"class_list":{"0":"post-3528","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-catalysts-chemical-auxiliary-agents","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>China Cyclopentanone Manufacturer \uff06 CAS 120-92-3 Supplier - Longchang chemical Co., Ltd.<\/title>\n<meta name=\"description\" content=\"Longchang Chemical is a leading manufacturer and supplier of Cyclopentanone in China. 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