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SOdium thiosulphate is used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent,
SOdium thiosulphate is used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent,
Sodium thiosulphate 1, Chemical name: Sodium thiosulphate
2, Structural formula:
3, Molecular formula: Na2S2O2·5H2O 4. CAS NUMBER: 7772-98-7.
5, Molecular weight: 248.17
6, Properties: monoclinic crystal, Melting point : 40-45°C, Relative density :1.729(17°C).
7, Quality standard: 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 | --- | ---- |
7, Packing:25kg, 50kg plastic woven bag, or following your demand g.
8, 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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