minSodium Pyrosulfite 98%
1.Factory direct
2.Competitive price and quality
3.prompt delivery
Sodium Pyrosulfite 98%min
Another Name: Sodium Metabisulfite
CAS No.: 7681-57-4
Molecular Formula: Na2S2O5
1) Specification:
Item | Specification | |
| Food Grade | Tech Grade |
Appearance | White or Slightly Yellow Crystalline Powder | |
Content | 98.0% Min | 98.0% Min |
SO2 | 65.0% Min | 65.0% Min |
Na2S2O4 | 2.0% Max | 2.0% Max |
Insolubles In Water | 0.05% Max | 0.05% Max |
Particle Size | 85% (Mesh 200) | 85% (Mesh 200) |
pH | 4.5 -5.5 | 4 -4.6 |
Fe | 5ppm max | 5ppm max |
Heavy Metal | 10 ppm max |
|
As | 1 ppm max |
|
2)Packing: 25kg plastic woven bag, 25kg Kraft paper bag, 25kg PE bag, 500kg/1000kg/1100kg/1200kg jumbo bag or as per the buyer's requirement, and one container load 25MT.
3) Applications: as preservative, bleach or loosener for food
