Product Information: CAS number 7757-82-6, EC number 231-820-9, Grade ACS,ISO,Reag. Ph Eur, Hill Formula Na₂O₄S, Chemical formula Na₂SO₄, Molar Mass 142.04 g/mol, Physicochemical Information: Density 2.70 g/cm3 (20 °C), Melting Point 888 °C, pH value 5.2 - 8.0 (50 g/l, H₂O, 20 °C), Bulk density 1400 - 1600 kg/m3, Solubility 200 g/l, flacon 500 g.