Product Code: 1.3070
Neutronco
Sodium sulfite
| Formula | Na2O3S |
| Chemical formula | Na2SO3 |
| Density | 2.63 g/cm3 (20°C) |
| Molar mass | 126.04 g/mol |
| Bulk density | ~ 1480 kg/m3 |
| CAS number | 7757-83-7 |
| HS Code | 28321000 |
| EC number | 231-821-4 |
| Storage | Without limitation |
| SDS | available |
| Odour | oderless |
| Form | powder |
| Color | white |
| p H | 8.8 – 1.0(50g/l 20 °C) |
| Solubility in water | 220g/l (20°C) |
| Solubility in ethanol | almost insoluble |
| Boiling point | decomposition |
| Melting point | >500 °C |
| Thermal decomposition | >500 °C |
| Assay | 95.0 – 100.5 | % | |
| Description | Conforms | ||
| Identification | Conforms | ||
| Color & clarity of solution | Conforms | ||
| Heavy metals | ≤ | 10 | ppm |
| Limit of iron | ≤ | 10 | ppm |
| Limit of selenium | ≤ | 10 | ppm |
| Limit of thiosulfates | ≤ | 0/1 | % |
| Limit of zinc | ≤ | 25 | ppm |
| SO2 | ≤ | 48 | % |
