| Characteristics | Specifications |
| Physical Appearance | White Crystalline Powder |
| Assay as SO2% by Mass | 65% Min |
| Assay asNa2S2O5 %by mass | 97 % Min |
| pH of 5% Solution | 4 to 5.5 |
| Clarity of 10% Solution | Clear |
| Insoluble Matter, Max | 0.01% |
| Iron (as Fe) Max | 30 ppm |
| Heavy Metal (as Pb) Max | 3 ppm |
Shelf Life: 1 year
Storage: Store in well ventilated area under the shade away from direct sunlight, heat or flames. Preferable in a shed where there is no weather effect.
Uses & Application Of Sodium Meta BiSulphite: Food Preservatives, Pharmaceutical Industry, Laboratory Chemicals, Leather Treatment, Photograph, Specialty Chemicals, Dye & Intermediates, Effluent Treatment, Metal Cleaning Chemical, Textile Industry, Oil Field Chemicals, Paper Mills, Agro Industry etc.