Acetic anhydride

Chinese name

乙酸酐

English name

Acetic anhydride

Molecular formula

C4H6O3

Synonyms

Acetyl anhydride

Uses

Mainly used as an acetylating agent as well as in production of drugs, dyes and cellulose acetate.

Properties

Appearance and properties: Colorless, transparent liquid with a pungent odor; the vapor is tear gas.

Melting point (°C): -73.1
Relative density (water = 1): 1.08.	Melting point (°C): 138.6
Relative density (air = 1): 3.52	Saturated vapor pressure (kPa): 1.33 (36 °C)
Combustion heat (kJ/mol): 1804.5	Critical temperature (°C): 326
Critical pressure (MPa): 4.36	Critical temperature (°C): 316
Flash point (°C): 49	Upper explosive limit [％(V/V)]: 10.3
Lower explosive limit [％(V/V)]: 2.0	Maximum explosion pressure (Mpa): 0.600

Solubility: Soluble in alcohol, ether and benzene.

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