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Sodium Hydrosulphite

Sodium dithionite,sodium hydrosulfite
Production Information
PROPERTIES   &  USAGE
Properties   Usage
Chemical formula Na2S2O4 Industry
Molar mass  174.107 g/mol (anhydrous) Biological sciences
  210.146 g/mol (dihydrate)  
Density 2.38 g/cm3 (anhydrous) Geosciences
  1.58 g/cm3 (dihydrate)  
Boiling point Decomposes Laboratory
Melting point 52 °C (126 °F; 325 K) Photography