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SODIUM METABISULPHITE (SMBS).

Product         : Sodium Metabisulphite                                       Formula        : Na2S2O5

CAS NO           : 7681-57-4

Physical & Chemical Characteristics:

  1. Appearance : White Crystalline Powder with SO2 Odor
  2. pH @ 25°C (5% Solution : 4 – 5
  3. Assay as Na2S2O5             : 98.0% Min.
  4. Assay as SO2 : 66.0% Min.
  5. Assay as Na2SO3 : 1.5% Max
  6. Assay as Na2SO4 : 2.0% Max.
  7. Bulk Density : 1.2 – 1.3 gm/cm3
  8. Chloride : 50 PPM Max.
  9. Water insoluble (10% Solution) : Clear Liquid
  10. Iron as Fe : 5 PPM Max.
  11. Arsenic & Selenium : 1 – 3 PPM
  12. 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.
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