1,4-Butanediol, min. 99.0 %, for synthesis, Molar mass (M) 90,12 g/mol, Density (D) 1,012 to 1,016 g/cm³, Flash point (flp) 115 °C, Boiling point (bp) 230 °C, CAS No. [110-63-4], EG-Nr. 203-786-5, Empirical formula C4H10O2