1)Product Information:
Product Name Sodium Metabisulfite
Molecular formula Na2S2O5
Cas No. 7681-57-4
Molecular Weight 190.09
Appearance White or yellowish crystalline powder
Synonyms Sodium pyrosulfite; disodium disulphite; Sodium metabisulphite; Sodium disulphite; Sodium pyrosulphite; Sodium Disulfite
2)Sodium Metabisulphite-Usage:
Bleaching agent for textile fibres；Colors Stripper and dechlorination; preparation of indigo Vat Dye, solubilizing and acidyfing agent for leather industries, bleaching agent for paper pulps, preservative and sterilization agent for food industries.
3)Sodium Metabisulphite-Specifications:
Sodium Metabisulphite Industry Grade:
|
Items |
Specifications |
|
Content(asNa2S2O5 ) % |
96%min |
94%min |
|
SO2 |
65%min |
65%min |
|
Fe |
0.005%max |
0.01%max |
|
Water Insoluble |
0.05%max |
0.05%max |
|
Ph |
4.0-4.8 |
4.0-4.8 |
Sodium Metabisulphite Food Grade:
|
Items |
Specifications |
|
Content (as Na2S2O5) |
96%min |
|
SO2 |
65%min |
|
Fe |
0.003%max |
|
Water Insoluble |
0.02%max |
|
Heavy metals(as Pb) |
0.0005%max |
|
Arsenic(as As) |
0.0001%max |
|
Ph |
4.0-4.8 |
4)Sodium Metabisulphite—Ability to supply:10000mt/year
5)Sodium Metabisulphite-Packing:
- 25kg PP bags
- 25kg Kraft bags
- 500kg / bag
- 1000kg/bag
- 25kg×40bags / pallet
- 25kg×40bags / jumbo bag
- According to customers' requirement
|
