ITEM | STANDARD |
Appearance | White crystalline powder |
Identification | Pass test |
Assay (C10H14N2Na2O8.2H2O) | 99.0% ~ 101.0% |
Chloride (Cl) | =< 0.01% |
Sulphate (SO4) | =< 0.1% |
pH (1%) | 4.0- 5.0 |
Ferrum (Fe) | =< 10 mg/kg |
Lead (Pb) | =< 5 ppm |
Heavy metals (as Pb) | =< 10 ppm |