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Sodium Thiosulphate Anhydrous

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Sodium Thiosulfate Anhydrous (hypo) also chemically known as Sodium Hyposulphite, hypo anhydrous (Na2)S2O3. We can also supply Sodium thiosulfate in sugar crystal and solution form if required. Sodium Thiosulfate (Hypo) is used as raw material in photographic industry, X-Ray fixture and developer industry, water treatment chemical industry, Waste treatment industry, Lower chlorine in swimming pools, Paper Industry and detergent industry. We are exporting this product to USA, Indonesia, Thailand, Durban and Korea. The appearance of STA is White, Shining, Crystalline free flowing powder, water-soluble which forms colorless solutions.

CAS No.:
7772-98-7 Specification of Sodium Thiosulfate Anhydrous (Hypo)

Formula(Na2) S2O3
Molecular Weight158
Assay as (Na2)S2O398 % Min.
20 % SolubilityClear
pH of 10 % Solution6.5 To 8.5


  • White powder free from foreign particles.

Standard Packing:

  • 25 Kg. / 50 Kg. HDPE Bag with extra liner inside
  • Special packaging requirements can be accommodated


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