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Description
| Chemical Name | Sodium Thiosulphate Anhydrous |
| Chemical Grade | AR |
| Chemical Formula | Na₂O₃S₂ |
| Chemical Weight | 158,11 g/mol |
| CAS No | 7772-98-7 |
| Solubility in Water | Soluble |
| Appearance | White, translucent, powder |
| Melting Point | 52 °C – Decomposes on heating. |
| Assay | min. 97.0% |
| Acidity (H2SO4) | < 0.01% |
| Alkalinity (as NaOH) | < 0.06% |
| Heavy Metals (as Pb) | < 0.005% |
| Insoluble Matter | < 0.4% |
| Iron (Fe) | < 0.005% |
| Sulphide (S) | < 0.001% |
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