Information
Specification category：
| Product No. | Product name | specifications |
|
1.01596.010 | Sodium pyrosulfite | AR500g |
|
1.01596.020 | Sodium pyrosulfite | CP500g |
|
1.01596.030 | Sodium pyrosulfite | CP25kg/drum |
|
1.01596.040 | Sodium pyrosulfite | AR25kg/drum |
|
1.01596.060 | Sodium pyrosulfite | CP10kg/drum |
Characteristic：
Appearance and properties: white crystal or crystal powder,sulfurous acid odor slightly.
Relative density (water=1): 1.48
Melting point(℃): >300(resolve)
Concentration: sterling
Solubility: soluble in water. Soluble in ethanol, acetone etc.
Technical indicators：
| Item | AR | CP |
|
Assay(Na2S2O5) | ≥96.0% | ≥94.0% |
|
Clarity of solution | pass3 | pass5 |
|
Insoluble matter in water | ≤0.005% | ≤0.01% |
|
Chloride(Cl) | ≤0.005% | ≤0.02% |
|
Thiosulfate (S2O3) | ≤0.05% | -- |
|
Arsenic(As) | ≤0.0001% | ≤0.0002% |
|
Iron(Fe) | ≤0.0005% | ≤0.002% |
|
Heavy metals(as Pb) | ≤0.0005% | ≤0.002% |
Metal Compounds
PCB Solutions
Chemical Reagents