Cas No. :7772-98-7
Quantity: 20,000Kilograms
Specs:Purity: >99% more than
Payment Method: T/T，L/C
Specifications
Our manufactory and company are biggest exporter in China, we can provide the best quality and price.
1.Chemical name: Sodium thiosulfate
2.Molecular formula: Na2S2O2·5H2O
3. Molecular weight: 248.17
4.Properties: monoclinic crystal, Melting point : 40-45, Relative density :1.729(17).
5. 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 | -- | -- |
6. Packing:25kg, 50kg plastic woven bag, or following your demand.
7.Uses: used in fixers, plating, leather, reductant, dechlorinating agent, sulfur dyeing agent, as a blush preventive agent, and as a disinfectant. and decolor agent
