Description
| CAS | 149-44-0 |
| Molecular Formula | CH3NaO3S.xH2O |
| Molecular Weight | 154.09 |
| Shelf Life | 60 Months |
| Physical Properties | |||
| Physical State at 20 °C | Solid | Colour | White flakes |
| Odour | Odorless | pH Value | 9.5 – 10.5 |
| Melting Point/ Freezing Point [°C] | 120 °C | Flash Point [°C] | > 100 °C |
| Solubility in Water [% weight] | 50 g/l at 20 °C | ||
| Specifications | |||
| Appearance | White big flakes | Assay As So2 (Iodometric On Dried Basis) | 45 – 55% |
| Clarity And Color of Solution | Clear and colorless | Alkalinity | Passes test |
| 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% | ||
| Dangerous Goods Information | |||
| UN Number | – | DG Class | – |
| Safety Information & Hazard Symbols | |
| Symbol | GHS08 |
| Signal Word | Warning |
| Hazard Statement | H341 |
| Precaution Statement | P281 |















