Pyrocatechol, min. 99 %, for biochemistry, Molar mass (M) 110,11 g/mol, Density (D) 1,34 to 1,37 g/cm³, Flash point (flp) 127 °C, Boiling point (bp) 245,5 °C, CAS No. [120-80-9], UN-Nr. 2811, EG-Nr. 204-427-5, Empirical formula C6H6O2