| Name: Sodium metabisulfite |
| Grade: Extra pure |
| Application: Synthesis |
| Synonyms: Sodium disulfite, Sodium pyrosulfite |
| CAS Number: 7681-57-4 EC Number: 231-673-0 Molar Mass: 190.10 g mol-1 Chemical Formula: Na2S2O5 |
| Download: Datasheet | CoA | SDS |
| Chemical formula: Na2S2O5 | Molar Mass: 190.10 g mol-1 |
| Appearance: White to pale yellow solid | Density: 1.48 g/cm3 (20 °C) |
| Solub. in water: 640 g/l (20 °C) | Melting point: 170°C (decompousition) |
| Boiling point: N/A | Flash point: N/A |
| Storage temp.: Below +30 °C | Cautions: Corrosive, irritant |
| R: 31-36/37 | S: 26 |
| HS-No.: 2832100 | EC-Index-No.: 231-673-0 |
| Assay of SO2 | 65 – 67.4 | % | |
| Identification (Sodium) | Conform | ||
| Identification (Sulfite ) | Conform | ||
| Limit of Chloride (Cl) | ≤ | 0.5 | % |
| Limit of thiosulfate | ≤ | 0.5 | % |
| Iron | ≤ | 200 | ppm |
| Ordering code | 1 kg | 2.5 kg | 5 kg | 10 kg | 20 kg |
| P.E. | 429.06.01000.02 | 429.06.05000.02 | 429.06.10000.02 | ||
| Glass |
| Hazard Symbol |
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