847-304-4400 
Sodium Thiosulfate
sodium hyposulfite
CAS: 7772-98-7
A colorless crystalline compound.
Other Known Names: sodium hyposulfite, hyposulphite of soda
Molecular Formula: Na2S2O3
Applications: metal treatment, water treatment
Properties
Molar Mass: 158.11 g/mol (anhydrous)
Appearance: White Crystals
Density: 1.667 g/cm3
Melting Point: 48.3°C