SODIUM METABISULPHITE 96.5% EXTRAPURE
| Product Code | B-02444 | BRAND | Bio-Chem |
|---|---|---|---|
| Grade | EXTRAPURE | CAS No | 7681-55-2 |
| Molecular Formula | Na2S2O5 | Molecular Weight | 190.10 |
| H.S.Code | 7681-57-4 | Shelf Life | 60 Months |
| Purity | 96.5 % |
Physical Properties
| Physical state at 20 °C | Solid | Colour | White crystalline |
|---|---|---|---|
| Odour | Sulphorous | Solubility in water [% weight] | 650 g/l at 20 °C |
| Melting point/ Freezing point [°C] | 300 °C | pH value | 4.5 at 50 g/l at 20 °C |
| Density [g/cm3] | 1.48 | Partition coefficient Log Pow octanol / water at 20°C | -3.7 |
Packaging
Specification
| Appearance | White crystalline powder |
| Assay (iodometric) | 96.5 – 100% |
| Assay (as SO2; iodometric) | 65 – 67.4% |
| Identity (acc. to pharmacopoeias) | Passes test |
| pH (5% solution in water) | 3.5 – 5.0 |
| Appearance of solution | Passes test |
| Insoluble matter in water | Max 0.025% |
| Residual solvents | Passes test |
| Chloride (Cl) | Max 0.02% |
| Thiosulphate (S2O3) | Max 0.05% |
| Heavy metal (as Pb) | Max 0.002% |
| Arsenic (As) | Max 0.0004% |
| Iron (Fe) | Max 0.002% |
Safety Information and Hazard Symbols
Symbol: GHS02 , GHS05, GHS07 ,GHS09
Signal Word: Danger
Hazardous Statement: H302-H318
Precaution Statement: P280-P305 + P351 + P338