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Sodium Sulphite Anhydrous

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Available sizes
SizePrice ex VATPrice inc VAT
25g £4.16 £4.99
100g £8.32 £9.99
1Kg £10.82 £12.99
5Kg £18.32 £21.99
10kg £30.82 £36.99
25kg £47.50 £57.00
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Technical grade


  • Oxygen scavanger for water treatment in photographic industry.
  • To wash fixer, sodium thiosulphate from film and photopaper emulsions.
  • As a bleaching, desulphurizing and dechlorinating agent in the textile industry.
  • Used as a sulphating and sulphomethylating agent.
  • Used in the production of sodium thiosulphate
  • Used in oil recovery.
  • Used in the making of dyes.
  • Used as a water treatment to reduce chlorine levels in pools.


  • CAS No: 7757-83-7
  • Other names: Sodium sulfite, Hypo Clear (photography)
  • Appearance: white solid
  • Formula: Na2SO3
  • Density: 2.633 g/cm3
  • Solubility: 67.8 g/100 g @20oC
  • Molecular weight: 126.043 g/mol
  • Melting point: 500oC


Click here to view MSDS 


Click here for Sales Specification sheet


PLEASE NOTE: This product is not for human or animal consumption.