Acetic formic anhydride, or ethanoic methanoic anhydride is an organic compound with the chemical formula C 3H 4O 3 and a structural formula of H 3C-(C=O)-O-(C=O)H. It can be viewed as the mixed anhydride of acetic acid and formic acid.

CAS：2258-42-6
中文别名：乙酸甲酰酯;
英文别名：trans acetoxy ketone;Acetic acid,anhydride with formic acid;methanone,(acetyloxy);acetyl formate;acetic acid formic acid anhydrate;acetic formic anhydride;tritiocarbonyl acetate;acetyloxyketone;Formic acetic anhydride;
分子式：C3H4O3
分子量：88.0621
精确质量：88.016
Psa：43.37
Logp：0.3418

密度：1.116g/cm3
沸点：102.6ºC at 760mmHg
闪点：31ºC
折射率：1.371
蒸汽压：33.5mmHg at 25°C

海关编码：2915900090