SODIUM THIOSULPHATE PENTAHYDRATE
SODIUM THIOSULPHATE PENTAHYDRATE
| Article No. | 551308 |
| Grade | AR grade |
| Purity | 99.9% |
| CAS No. | 10102-17-7 |
| Molecular Formula | Na2S2O3, 5H2O |
| Molecular Weight | 248.2 |
| H.S. Code | 28323010 |
| Shelf Life | 60 Months |
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 | Very Soluble in water |
Specifications
| Appearance | Transparent, colorless crystals, efflorescent in dry air |
| Assay | 99-101% |
| pH | 5.5 – 7.5 |
| Solubility | Very soluble in water, practically insoluble in ethanol 96% |
| Sulfates and Sulfites | Max 0.2% |
| Sulfides | Passes test |
| Identification | A – It decolourises iodinated potassium iodide solution R B – Gives the reaction of sodium |
| Packings | 500 gm |
