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Sodium thiosulfate CAS 7772-98-7

Sodium thiosulfate CAS 7772-98-7(4)
Sodium thiosulfate CAS 7772-98-7(5)
Sodium thiosulfate CAS 7772-98-7(6)
Sodium thiosulfate CAS 7772-98-7(4)
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Sodium thiosulfate Quick Detail:
  • English name: Sodium thiosulfate
  • CAS Number: 7772-98-7
  • Molecular Formula: Na2O3S2
  • Molecular Weight: 158.11
  • EINECS Number: 231-867-5
  • Assay: 99.0%min
  • Appearance: colorless transparent crystal
Sodium thiosulfate Specification:
Item Photographic grade Industrial grade Anhydrous grade
Appearance colorless transparent crystal colorless transparent crystal white powder
Assay ≥ 99.00% ≥ 98.5% ≥ 97.0%
Water Insoluble matter ≤ 0.01% ≤ 0.03% ≤ 0.03%
Sulfide ≤ 0.001% ≤ 0.003% ≤ 0.001%
Fe ≤ 0.001% ≤ 0.003% ≤ 0.005%
PH 6.5~9.5 6.5~9.5 6.5~9.5
Water solution reaction in accordance with the test in accordance with the test —-
Granularity(g/g) 12~16 —-
Sodium thiosulfate Application:

Mainly used in the photographic industry as a fixer. Secondly, it is used as a reducing agent for dichromate during tanning, a neutralizer for nitrogenous exhaust gas, a mordant, a bleaching agent for straw and wool, and a dechlorination agent for pulp bleaching. It is also used in the manufacture of tetraethyl lead, dye intermediates, etc., and silver extraction from ore.

Sodium thiosulfate Package and Storage:
  • 25kg/bag or Customized according to customer requirements
  • Keep sealed.

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