Product Categories > Sulphite Products
SODIUM METABISULPHITE (SMBS).
Product : Sodium Metabisulphite Formula : Na2S2O5
CAS NO : 7681-57-4
Physical & Chemical Characteristics:
- Appearance : White Crystalline Powder with SO2 Odor
- pH @ 25°C (5% Solution : 4 – 5
- Assay as Na2S2O5 : 98.0% Min.
- Assay as SO2 : 66.0% Min.
- Assay as Na2SO3 : 1.5% Max
- Assay as Na2SO4 : 2.0% Max.
- Bulk Density : 1.2 – 1.3 gm/cm3
- Chloride : 50 PPM Max.
- Water insoluble (10% Solution) : Clear Liquid
- Iron as Fe : 5 PPM Max.
- Arsenic & Selenium : 1 – 3 PPM
- Heavy Metals as Pb : 5 PPM Max.
Major Applications
- In food industries as additive and preservative, antioxidant and antimicrobic.
- In drinking water treatment / RO water treatment plants for removing the excess chlorine and for membrane preservation.
- In chemical synthesis in the production of acrylic fibers & resins.
- In mining industry as floating agent
Packing
25Kgs PE valve bag,
500 & 1250 Kgs Woven Polypropylene Bag with inner liner poly ethylene.
Storage
- Store in ventilated dry area and under shed.
- Keep containers closed when not use, and on exposure to moisture it oxidizes easily to sodium sulphate.
- Shelf life: 2 Years.