4-Hydroxybenzaldehyde, min. 98 %, for synthesis, Molar mass (M) 122,12 g/mol, Density (D) 1,13 g/cm³, Flash point (flp) 174 °C, Boiling point (bp) 225 to 315 °C, CAS No. [123-08-0], EG-Nr. 204-599-1, Empirical formula C7H6O2