Colorless volatile liquid with strong pungent odor and corrosiveness. Flash point (open cup) 64.4℃, melting point -74.13℃, boiling point 138.63℃, 44℃ (2kPa), relative density 1.0820 (20/20℃), refractive index 1.390. Viscosity 0.91mPa·s (20℃), autoignition point 388.9℃. Soluble in cold water, decomposes into acetic acid in hot water, and produces ethyl acetate with ethanol. Soluble in chloroform, ether and benzene.