Metol, min. 99 %, ACS, photo quality, Molar mass (M) 344,39 g/mol, Density (D) 0,69 g/cm³, Flash point (flp) 257 °C, Boiling point (bp) 300 °C, CAS No. [55-55-0], UN-Nr. 3077, EG-Nr. 200-237-1, Empirical formula C14H20N2O6S