| CAS No.: | |
|---|---|
| Other Names: | |
| MF: | |
| EINECS No.: | |
| Purity: | |
| Place of Origin: | |
| Type: | |
| Usage: | |
| Brand Name: | |
| Model Number: |
Quick Details
Specifications
:Molecular formula : Na2SO3
Molecular weight : 126.04
CAS NO.: 7681-57-4
Standard: HG/T2967-2000
Appearance : white crystalline powder
Main content :97%,96%,93%
Properties:
Usage:
1.for the repparation of a trace analysis of tellurium and determination of niobium and developering, also used as a reducing agent
2.for synthetic fiber fabric bleaching agent, stabilizer, photographic developer, dye bleaching deoxidizer, perfume and dye reduction agent, lignin removal agent
3. Used as ordinary analytical reagent and photosensitive resistance materials
4. Reductive bleaching agent, the food has strong inhibitory effects on plant food bleaching effect and the oxidase.
5.For a variety of cotton fabric scouring of cotton fiber, can prevent local oxidation and influence of fiber strength, and improve the whiteness of boiling
Standard
|
Commodity |
Anhydrous Sodium Sulfite |
MF |
Na2SO3 |
||
|
CAS NO. |
7757-83-7 |
Inspection date |
|
||
|
ITEM AND RESULT |
|||||
|
ITEMS |
STANDARD |
RESULTS |
|||
|
Na2So3 % |
≥97.00% |
97.09% |
|||
|
FE% |
≤0.003% |
0.0025% |
|||
|
Insoluble solid in water% |
≤0.02% |
0.01% |
|||
|
Na2Co3% |
≤0.1% |
0.10% |
|||
|
Na2So4% |
≤2.5% |
2.5% |
|||
|
NaCl% |
≤0.1% |
0.1% |
|||
|
Appearance |
White crystals or crystalline powder |
QUALIFIED |
|||
Package: Double-layer plastic woven bag. Net weight per bag: 25Kg or 50Kg.