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Sodium Thiosulfate
Product Detailed
Related Categories:Sulphate
monoclinic crystal,used in fixers, plating, leather, reductant, dechlorinating agent.
1, Chemical name: Sodium thiosulfate 2, Structural formula:3, Molecular formula: Na2S2O2·5H2O4, Molecular weight: 248.175, Properties: monoclinic crystal, Melting point : 40-45, Relative density :1.729(17). 6, Quality standard:Item | Photo grade | Tech grade | Anhydrous grade |
Appearance | colorless transparent crystal | colorless transparent crystal | white powder |
Assay | ≥99.00% | ≥98.5% | ≥98.0% |
Water Insoluble matter | ≤0.01% | ≤0.03% | ≤0.03% |
Sulfide | ≤0.001% | ≤0.003% | ≤0.001% |
Fe | ≤0.001% | ≤0.003% | ≤0.001% |
PH value | 6.5-9.5 | 6.5-9.5 | 6.5-9.5 |
Granularity | 12-16 | -- | -- |
Sodium Thiosulfate