Cas号123-72-8Beilstein506061分子式***H8O；(CH3)2CHCOOH；CH3CH2CH2CHO分子量72.11别名丁醛，酪醛外观Appearance无色液体红外光谱鉴别InfraredspectrometryConforms纯度Purity≥99.5%(GC)相对密度Specificgr***ity(20/20°C)0.8010-0.8050折光率Refractiveindexn20/D1.3780-1.3810)