| Article No. | 06050 |
| Purity | 99.5% |
| Molecular Formula | Na2S2O3.5H2O |
| H.S. Code | 2832.3010 |
| Grade | AR/ACS |
| CAS No. | 10102-17-7 |
| Molecular Weight | 248.17 |
| Shelf Life | 60 Months |
| 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 | ||||
| Appearance | Large, colourless crystals or coarse crystalline powder | Assay (iodometric) | 99.5 - 101.0% |
| Insoluble matter (10% in water) | Max. 0.005% | pH (5% solution in water; 25°C) | 6.0 - 8.4 |
| Nitrogen compounds (as N) | Max. 0.002% | Chloride (Cl) | Max. 0.02% |
| Heavy metal (as Pb) | Max. 0.001% | Sulphate and Sulphite (as SO4) | Max. 0.1% |
| Sulphide (S) | Passes test |