Methyl acetate

CAS No. 79-20-9

Formula: C3H6O2
Basic Info

Methyl acetate, also known as MeOAc, acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. Methyl acetate is occasionally used as a solvent, being weakly polar and lipophilic, but its close relative ethyl acetate is a more common solvent being less toxic and less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids. Methyl acetate is not considered as a VOC.

Formula
C3H6O2
Molecular Weight
74.0785
Exact Mass
74.0368
LogP
0.1793
PSA
26.3
Synonyms

Devoton

Acetic acid, methyl ester

Methyl acetic ester

Methylacetat

Methyl ethanoate

Methyl acetate

1-yl-acetic acid, methyl ester

Methylacetaat

Tereton

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Properties
Appearance & Physical State
Clear liquid
Density
0.932
Boiling Point
57.4ºC
Melting Point
-98ºC
Flash Point
-10ºC
Refractive Index
1.36-1.362
Water Solubility
250 g/L (20 ºC)
Stability
Stable. Extremely flammable - readily forms explosive mixtures with air. Note low flash point and wide explosion limits. Incompatible with strong oxidizing agents, strong bases, strong acids, nitrates. May be moisture sensitive.
Storage Condition
Flammables area
Vapor Density
2.55 (vs air)
Vapor Pressure
165 mm Hg ( 20 °C)
Safety Info
RTECS
AI9100000
Safety Statements
S16-S26-S29-S33
WGK Germany
1
Risk Statements
R11; R36; R66; R67
RIDADR
UN 1231
Hazard Class
3
Packing Group
II
Caution Statement
P210; P280; P304 + P340 + P312; P305 + P351 + P338; P337 + P313; P403 + P235
Hazard Codes
Hazard Declaration
Spectrum
NMR Spectrum 1H NMR : parameter in CDCl3
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IR Spectrum IR : liquid film
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Raman Spectrum Raman : 4880 A,200 M,liquid
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