CAS 79-20-9: Methyl Acetate (C3H6O2)

Identity

CAS Number79-20-9
Molecular FormulaC3H6O2
IUPAC Namemethyl ethanoate
Molecular Weight74.08 g/mol
SMILESCOC(=O)C
SynonymsMeOAc, methyl ethanoate, acetic acid methyl ester

2D Structure

Physical Properties

Density0.934 g/mL at 25°C
Boiling Point56.9°C
Melting Point-98.1°C
Flash Point-10.0°C
Vapor Pressure22.8 kPa at 20°C
Refractive IndexnD = 1.361
Dielectric Constantε = 6.7

Safety & GHS Classification

FlammableIrritant

Storage: Store in cool, well-ventilated area. Extremely flammable — low boiling point (56.9°C). Use explosion-proof equipment. Keep away from ignition sources.

Material Compatibility Matrix

Plastics

MaterialRating
PTFEExcellent
PVCFair
PEGood
PPGood
PEEKExcellent
PVDFGood

Rubbers

MaterialRating
VitonPoor
NBRSevere Effect
EPDMGood
SiliconeFair
FKMPoor

Metals

MaterialRating
Stainless 316Excellent
AluminumExcellent
CopperExcellent
BrassExcellent

Applications

External References: PubChem

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