Items | Standard | |||
Industry grade | Industry grade | Food grade | Regent grade | |
Total acid content(HCL) % | 31% | 32% | 31% | 36% |
Iron(FE) % | 0.008% | 0.002% | 0.001% | 0.00005% |
Ignition residue % | 0.10% | 0.05% | --- | 0.00009% |
Free chlorine(CL)% | 0.008% | 0.004% | --- | 0.0001% |
As% | 0.0001% | 0.0001% | --- | 0.000005% |
Sulfate(SO42-)% | 0.03% | 0.005% | 0.007% | 0.0002% |