Product Information CAS number 7727-54-0 Grade ACS,Reag. Ph Eur Hill Formula H₈N₂O₈S₂ Chemical formula (NH₄)₂S₂O₈ Molar Mass 228.20 g/mol Physicochemical Information Density 1.980 g/cm3 Melting Point 120 °C (descompunere) pH value 3.2 (100 g/l, H₂O, 20 °C) Bulk density 900 kg/m3 Solubility 620 g/l flacon 500 g