The examination item | Speciification:CP/HG/T4200-2011 | Results |
Appearance | blue-green crystal | blue-green crystal |
Conent(FeCl2) | 62.5% | 62.51% |
Conent(FeCl2•4H2O) | ≥98% | 98.32% |
HCl | ≤0.1% | 0.1% |
Insolubles in water | ≤0.1% | 0.1% |
sulphate (SO4) | ≤0.005% | 0.002% |
Iron of high valence (Fe3+) | ≤0.1% | 0.09% |
Copper (Cu) | ≤0.005% | 0.003% |
Arsenic (As) | ≤0.002% | 0.0005% |
Zinc(Zn) | ≤0.01% | 0.0004% |
Lead (Pb) | ≤0.006% | 0.002% |
Ni | ≤0.01 % | 0.002% |
Co | ≤0.05% | 0.001% |
Mn | ≤0.1% | 0.08% |