Item |
index |
Main content(Na2S2O5) |
≥98 |
Fe(As content Fe) |
≤0.001 |
Clarity |
Clear |
Water-Insoluble |
≤0.01 |
Heavy metal content(Pb) |
≤0.0005 |
As content(As) |
≤0.0001 |
PH Value |
4.0~4.6 |