Item |
Index |
Main content (as KH2PO4) |
99% Min |
P2O5 |
52% Min |
K2O |
34% |
PH value (1% water solution) |
4.3-4.7 |
Water-insolubility |
0.1% Max |
Moisture |
0.5% Max |
Heavy metals (as Pb) |
0.005% Max |
As |
0.008% Max |
Fe |
0.003% Max |