SODIUM THIOSULPHATE PENTAHYDRATE 99% EXTRAPURE
| Product Code | B-02527 | BRAND | Bio-Chem |
|---|---|---|---|
| Grade | EXTRAPURE | CAS No | 10102-17-7 |
| Molecular Formula | Na2S2O3.5H2O | Molecular Weight | 248.17 |
| H.S.Code | 2832.30100 | Shelf Life | 60 Months |
| Purity | 99 % |
Physical Properties
| Physical state at 20 °C | Solid | Colour | Colorless crystals |
|---|---|---|---|
| Odour | Odorless | Density [g/cm3] | 1.75 |
| Solubility in water [% weight] | 79g/100 ml water @ 40C | Melting point/ Freezing point [°C] | 48 °C |
| pH Value | 6 - 8.5 | Boiling point [°C] | > 100°C |
Packaging
Specification
| Appearance | Large, colorless crystals or white 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
Symbol:GHS02, GHS07 ,GHS09
Signal Word: Warning