Sodium Bisulphite
Specification :
| DESCRIPTION | LIMITS |
|---|---|
| Appearance | White to Off-White Crystalline Powder |
| Purity as SO2 | 61.5% |
| Assay as NaHSo3 | 96.3% |
| pH | 5.0 |
| Matter Insoluble by Mass | 0.01% max |
| Heavy Metals(as Pb) | NMT 0.001% |
| Thiosulphate by mass | 0.1% max |
| Solution of 20% | Passes the Test |