SODIUM METABISULPHITE AR/ACS
SODIUM METABISULPHITE AR/ACS
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Short Name: SODIUM METABISULPHITE
Other Names: Sodium pyrosulphite; Sodium disulphite
Chemical Specifications
Appearance : White crystalline powder
Assay : Min. 97.0%
Insoluble matter in water : Max. 0.005%
Chloride (Cl) : Max. 0.005%
Arsenic (As) : Max. 0.0001%
Phosphate (PO4) : Max. 0.002%
Thiosulphate (S2O3) : Max. 0.05%
Heavy metal (as Pb) : Max. 0.001%
Iron (Fe) : Max. 0.002%
| Basic | |
| CAS No. | 7681-57-4 |
| Grade | AR/ACS |
| HS Code | 2832.1090 |
| Molecular Formula | Na2S2O5 |
| Molecular Weight | 190.10 |
| Purity | 97% |
| Shelf Life | 60 Months |
| Physical Properties | |
| Colour | Colour |
| Density [g/cm3] | Density [g/cm3] |
| Melting point/ Freezing point [°C] | Melting point/ Freezing point [°C] |
| Odour | Odour |
| Partition coefficient Log Pow octanol /water at 20°C | Partition coefficient Log Pow octanol /water at 20°C |
| pH value | pH value |
| Physical state at 20 °C | Physical state at 20 °C |
| Solubility in water [% weight] | Solubility in water [% weight] |
| Safety | |
| Hazardous Statement | H302-H318 |
| Precaution Statement | P280-P305 + P351 + P338 |
| Signal Word | Danger |
| Symbol | GHS05, GHS07 |