Acetaldehyde, min. 99,5 %, p.a., Molar mass (M) 44,05 g/mol, Density (D) 0,785 g/cm³, Flash point (flp) -40 °C, Boiling point (bp) 20 to 21 °C, Storage temp. +4 °C, CAS No. [75-07-0], UN-Nr. 1089, EG-Nr. 200-836-8, Empirical formula C2H4O