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Specification | Technical grade(top class) | Technical grade(first class) |
Main content (as KH2PO4) %≥ | 99.0 | 98.0 |
Oxide (K2O) %≥ | 34 | 33.5 |
PH value(30g/L water solution) | 4.3-4.7 | 4.3-4.7 |
Moisture %≤ | 0.5 | 1.0 |
Heavy metals(as Pb) %≤ | 0.005 | 0.008 |
Iron (Fe) %≤ | 0.003 | 0.008 |
Arsenic (as As) %≤ | 0.005 | 0.015 |
Choride (CL) %≤ | 0.05 | 0.2 |
Water insoluble %≤ | 0.1 | 0.20 |






















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