186325

Methyl acetate

ReagentPlus^®, 99%

• Formule linéaire : CH₃COOCH₃
• Numéro CAS: 79-20-9
• Poids moléculaire : 74.08
• Numéro Beilstein : 1736662
• Numéro CE : 201-185-2
• Numéro MDL: MFCD00008711
• Code UNSPSC : 12352108
• ID de substance PubChem : 329751726
• Nomenclature NACRES : NA.21

Propriétés

• Densité de vapeur: 2.55 (vs air)
• Niveau de qualité: 200
• Pression de vapeur: 165 mmHg ( 20 °C)
• Gamme de produits: ReagentPlus^®
• Pureté: 99%
• Forme: liquid
• Température d'inflammation spontanée: 936 °F
• Limite d'explosivité: 16 %
• Indice de réfraction: n20/D 1.361 (lit.)
• Point d'ébullition: 57-58 °C (lit.)
• Pf: −98 °C (lit.)
• Densité: 0.934 g/mL at 25 °C
• Chaîne SMILES: COC(C)=O
• InChI: 1S/C3H6O2/c1-3(4)5-2/h1-2H3
• Clé InChI: KXKVLQRXCPHEJC-UHFFFAOYSA-N

Description

Description générale

Its IR spectra in the vapor phase and in solution form (in CS₂ and CCl₄) have been reported. It can be synthesized from dimethyl ether via carbonylation in the presence of halide-free catalysts based on zeolites. It has also been reported to be formed during the synthesis of poly(vinyl) alcohol (PVA). It undergoes transesterification reaction with n-octanol in the presence of Amberlyst 15 catalyst to afford octyl acetate and methanol.

Methyl acetate is an aliphatic ester that can be prepared via carbonylation of dimethyl ether over zeolites. MA is formed as a by-product during the preparation of polyvinyl alcohol from acetic acid and methanol.

Application

Methyl acetate may be used for the preparation of fatty acid methyl esters and triacetin from rapeseed oil via non-catalytic trans-esterification reaction under super-critical conditions.

Methyl acetate may be used in the following:

• As acyl acceptor in the preparation of biodiesel.
• Synthesis of ethanol.
• Preparation of n-butyl acetate, via transesterification reaction with n-butanol in the presence of acidic catalysts.

It may also be used as a precursor in the synthesis of the following:

• acetic anhydride
• methyl acrylate
• vinyl acetate
• ethyl amide

Informations légales

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Pictogrammes: GHS02,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H225 - H319 - H336
• Conseils de prudence: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Classification des risques: Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3
• Organes cibles: Central nervous system
• Risques supp: EUH066
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): 8.6 °F - closed cup
• Point d'éclair (°C): -13 °C - closed cup