Crotonic acid, 99 %, for biochemistry, Molar mass (M) 86,09 g/mol, Density (D) 1,018 g/cm³, Flash point (flp) 88 °C, Boiling point (bp) 185 °C, CAS No. [107-93-7], UN-Nr. 2823, EG-Nr. 203-533-9, Empirical formula C4H6O2