1,3-Butanediol, min. 99 %, for synthesis, Molar mass (M) 90,12 g/mol, Density (D) 1,004 g/cm³, Flash point (flp) 115 °C, Boiling point (bp) 209 °C, CAS No. [107-88-0], EG-Nr. 203-529-7, Empirical formula C4H10O2