Propylene glycol ethyl ether, min 99 %, for synthesis, Molar mass (M) 104,15 g/mol, Density (D) 0,897 g/cm³, Flash point (flp) 40 °C, Boiling point (bp) 130,5 to 134,5 °C, CAS No. [1569-02-4], UN-Nr. 3271, EG-Nr. 216-374-5, Empirical formula C5H12O2