| Customization: | Available |
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| CAS No.: | 7772-98-7 |
| Formula: | Na2s2o3 |
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| Other chemical name: | Hypo |
| CAS No.: | 7772-98-7 |
| Molecular formula: | Na2S2O3 |
| Molecular Weight: | 158.108 |
| EC No.: | 231-867-5 |
| HS CODE: | 2832300000 |
| Melting Point: | 48ºC |
| Boiling Point: | 100ºC |
| Solubility | Soluble in water |
| Density: | 1.69 g/cm³ |
| Appearance and Properties: | Colorless transparent monoclinic crystal,odorless,Easy to dissolve in water and insoluble in alcohol; |
| Application: |
1) Used as fixing agent in photographic industry
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2) It can be used in Electroplating, Water Purification and Leather tannin
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3) Used as reducing agent in chemical industry
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4) Used as Dechlorination agent in bleaching of cotton products
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5) Used as Dechlorination agent for pulp
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6) Used as detergents, disinfectants and discoloring agents in the pharmaceutical industry
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| Packing: | 1) 25Kg or 50Kg plastic woven bag with PE inner; |
| 2) 25Kg Paper-craft bag with PE inner; | |
| 3) 1,000Kg Ton bag with PE inner; |
| ITEMS | SPECIFICATIONS | Test Result |
| Appearance | Colorless transparent crystal | Conform |
| NA2S2O3·5H2O | ≥ 99% | 99.4% |
| Water Insoluble Matter | ≤ 0.01% | 0.010% |
| Fe Content | ≤ 0.002% | 0.0016% |
| Sulfide(as NA2S) | ≤ 0.001% | 0.0009% |
| NaCL content | ≤ 0.05% | 0.045% |
| PH Value | 6.5-9.1 | 7.5 |
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