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SODIUM THIOSULPHATE PENTAHYDRATE Extra Pure
Confirming to BP,USP.
| Article No. | Grade | Purity | CAS No. | Molecular Formula | Molecular Weight | H.S. Code | Shelf Life |
|---|---|---|---|---|---|---|---|
| SC1837 | Extra Pure | 99% | 10102-17-7 | Na2S2O3.5H2O | 248.17 | 2832.3010 | 60 Months |
Packings
| 500 g,1000 g,5000 g,25 Kg,50 Kg |
Physical Properties
| Physical state at 20 °C | Solid |
| Colour | Colorless crystals |
| Odour | Odorless |
| pH value | 6 - 8.5 |
| Melting point/ Freezing point [°C] | 48°C |
| Boiling point [°C] | > 100°C |
| Density [g/cm3] | 1.75 |
| Solubility in water [% weight] | 79g/100 ml water @ 40C |
Specifications
| Appearance | Large, colourless crystals or coarse crystalline powder |
| Assay (iodometric) | 99-100.5% |
| Identity | Passes test |
| Appearance of solution | Dissolve 10.0 g in 50 ml of distilled water R, add 1 ml of 0.1 M sodium hydroxide and dilute to 100 ml with the same solvent. Clear & colourless |
| pH (10% solution in water) | 6.0 - 8.4 |
| Chloride (Cl) | Max 0.05% |
| Sulphate and Sulphite (as SO4) | Max 0.2% |
| Sulphide (S) | Passes test |
| Heavy metal (as Pb) | Max 0.001% |
| Calcium (Ca) | Passes test |
| Water (H2O) | 32.0 - 37.0% |
Safety Information and Hazard Symbols
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Revision Date : 09-May-2022
Certificate of Analysis (COA's)
To download COA please enter the batch number below