Potassium metabisulfite
- CAS number
- 16731-55-8
- Molecular weight
- 222.32
- Molecular formula / chemical symbol
- K2S2O5
Description
Colorless or white crystals. The odor of sulfur dioxide. Sensitive wetlands. Acid reaction. Contact with the acid, sulfur dioxide escape. Gradually oxidized in air sulfates, faster in the wet air oxidation. Ground into powder burning burning. Soluble in water, insoluble in alcohol. 190 ℃ decomposition. Irritation.
USES
Reductant, the developer, bacterial inhibitors, antioxidants, prepared alkylene sulfate.
Keywords:Surface treatment chemicals
Report
|
TEST ITEMS |
TEST RESULT |
|
|
|
(AR) |
(CP) |
|
K2S2O5 |
≥ 95.0 |
94.0 |
|
Clarity Test |
Qualified |
Qualified |
|
Water insoluble matter |
≤ 0.005 |
0.02 |
|
Chloride |
≤ 0.005 |
0.01 |
|
Fe |
≤ 0.0005 |
0.002 |
|
As |
≤ 0.0001 |
0.0003 |
|
Heavy metals (as Pb) |
≤ 0.001 |
0.002 |