Physical Properties
| Physical state at 20 °C | Solid | Odour | Odorless |
| Melting point/ Freezing point [°C] | 120 °C | Solubility in water [% weight] | 50 g/l at 20 °C |
| Colour | White flakes | Flash point [°C] | > 100 °C |
pH value | 9.5 – 10.5 |
Packings
50kg
25kg
2500g
500g
Safety Information and Hazard Symbols
Symbol: GHS08
Signal Word: Warning
Hazardous Statement: H341
Precaution Statement: P281
Signal Word: Warning
Hazardous Statement: H341
Precaution Statement: P281
Specifications
| Appearance | White big flakes |
|
Assay
|
as SO2 (Iodometric; on dried basis) 45 – 55% |
| Alkalinity Passes test | Clarity and color of solution Clear and colorless |
| pH (2% solution) | 9.5 – 10.5 |
| Sodium sulphite (Na2SO3) | Max 5% |
| Iron (Fe) | Max 0.001% |
| Sulphide (S) | Passes test |
| Loss on drying (at 105°C) | Max 27% |
- توجه :