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Test item | FCC | ||
Content (NaH2PO4) % | 98.0-103.0 | ||
pH value | 4.1-4.7 | ||
Insoluble in water ≤% | 0.2 | ||
Pb ≤mg/kg | 4.0 | ||
As ≤mg/kg | 3.0 | ||
Fluorides(F) ≤mg/kg | 50.0 | ||
Loss on drying | NaH2PO4 ≤% | 2.0 | |
NaH2PO4·H2O % | 10.0-15.0 | ||
NaH2PO4·2H2O % | 20.0-25.0 | ||



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