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Sodium Thiosulfate |
Chemical description: |
Sodium Thiosulfate、HYPO |
Structural formula: |
 |
Molecular formula: |
Na2S2O3·5H2O |
Molecular weight: |
248.17 |
Properties: |
monoclinic crystal, Melting point : 40-45℃, Relative density :1.729(17℃). |
Quality standard: |
Item |
Refined grade |
Appearance |
Colorless transparent crystal |
Assay |
≥99.00% |
Water Insoluble matter |
≤0.01% |
Sulfide |
≤0.001% |
Fe |
≤0.002% |
PH |
6.5~9.5 |
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Packing: |
50kg/bag, or as per client’s request. |
Uses: |
used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant and decolor agent |
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