Original
The company profile was verified by 
Molecular weight：120.05
CAS NO: 7681-38-1
Appearance：Colorless hygroscopy granular
Usage：It can be used as acid solvent, acidity regulator, textile dyeing auxiliary and plating additives, etc.
Index：Highest impurity content is counted by %
| Index name | High purity | Industrial |
| Content | 95.0-98.0 | 93.0-98.0 |
| Water insoluble | ≤0.03% | ≤0.1% |
| Chloride（Cl） | ≤0.02% | ≤0.05% |
| Arsenic（As） | ≤0.0003% | — |
| Ferrum(Fe) | ≤0.005% | ≤0.005% |
| Heavy metal( counted by Pb) | ≤0.003% | ≤0.01% |
| Sulfuric acid（H2SO4） | ≥38% | ≥38% |
Packing：Plastic woven bag, kraft bag or fiber can. Net weight is 25kg..
