Sodium Metabisulfite is free flowing dry white uniformly crystalline powder. It's solution is called sodium acid sulfite or sodium bisulfite. It is also named sodium pyrosulfite.
/Properites/
Sodium Metabisulfite is a convenient source of sulfur dioxide and widely used for a variety of applications.
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/Specification/
Formula | Na₂S₂O5(NaHSO3) |
Molercular Weight | 190.1 |
Appearance | White free flowing uniformly crystalline |
Odor | |
Purity: | |
Na2 S2 O5 | 95% up (SO2 65% UP) |
Na2 SO3 | 1-3% |
Iron (Fe) | 30 ppm Max. |
Lead (Pb) | 10 ppm Max. |
Arsenic (As) | 1 ppm Max. |
Chloride (NaCl) | 50 ppm Max. |
PH-Value | 1% solution 4.7 |
/Application/
- Sodium Metabisulfite is widely used as an Anti-chlor in textile industry and as a bleaching agent in the preparation of wood pulp.
- It can be used for preserving foodstuffs, as a preservative in manufacture of silage.
- In photography it is used as reducing agent of developing.
- In organic chemistry it is also used for manufacture of acrylic fibres, and in production of viscose rayon.
- It confers additional water solubility on dyestuff in the manufacture of certain dyestuffs.
- It is used in tanning industry and pharmacy industry.
- It is ued for water treatment.
- Also it is used for raw rubber production from latex.
/Packing/
Packing Method | Unit | Remarks |
---|---|---|
jumbo bag | 500/1000 kgs net weight | - |
paper bag | 25 kgs net weight | - |
other packing | - | Other packing can be supplied upon request. |
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