Items | Standard |
Appearance | White powder |
Assay, % | ≥99 |
Phosphorus pentoxide, % | ≥49.5 |
PH(10g/L solution) | 8.5-10.0 |
Sulfate,as SO4, % | ≤0.25 |
Heavy metals, as Pb, % | ≤0.001 |
Arsenic, as As, % | ≤0.0003 |
Fluoride as F, % | ≤0.002 |
Water insoluble, % | ≤0.1 |
Cl, % | ≤0.014 |
Lead, % | ≤0.0004 |
Fe, % | ≤0.002 |
Loss on drying, % | ≤2.0 |