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186325 Sigma-Aldrich

Methyl acetate

ReagentPlus®, 99%

  • CAS Number 79-20-9

  • Linear Formula CH3COOCH3

  • Molecular Weight 74.08

  •  Beilstein/REAXYS Number 1736662

  •  EC Number 201-185-2

  •  MDL number MFCD00008711

  •  PubChem Substance ID 329751726

  •  NACRES NA.21

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Properties

Related Categories ReagentPlus, ReagentPlus Solvent Grade Products, ACS and Reagent Grade Solvents, Amber Glass Bottles, Carbon Steel Cans with NPT Threads,
Quality Level   200
vapor density   2.55 (vs air)
vapor pressure   165 mmHg ( 20 °C)
product line   ReagentPlus®
assay   99%
form   liquid
autoignition temp.   936 °F
expl. lim.   16 %
refractive index   n20/D 1.361 (lit.)
bp   57-58 °C (lit.)
mp   −98 °C (lit.)
density   0.934 g/mL at 25 °C
SMILES string   COC(C)=O
InChI   1S/C3H6O2/c1-3(4)5-2/h1-2H3
InChI key   KXKVLQRXCPHEJC-UHFFFAOYSA-N

Description

General description

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

Packaging

1, 2.5, 4 L in glass bottle

18 L in steel drum

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
Target organs 
Central nervous system
Supplemental Hazard Statements 
EUH066
RIDADR 
UN1231 - class 3 - PG 2 - Methyl acetate
WGK Germany 
WGK 1
RTECS 
AI9100000
Flash Point(F) 
8.6 °F - closed cup
Flash Point(C) 
-13 °C - closed cup

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

Pressure-Temperature Calculator for Solvents

*Calculations provide estimated results based on Antoine's Coefficients and their associated temperature range values. Antoine's Coefficients were obtained from the National Institute of Standards an...

Peer-Reviewed Papers
15

References

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