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Item | Standard | |
Anhydrous(Na4P2O7) | Decahydrate(Na4P2O7·10H2O) | |
Main content ,≥% | 96.5~100.0 | 98.0 |
Water insoluble,≤% | 0.20 | 0.10 |
PH value(10g/L, aqueous solution ) | 9.9~10.7 | |
Orth phosphate | pass | |
Arsenic(As),≤% | 0.0003 | |
Heavy Metal(as Pb),≤% | 0.001 | |
Fluoride(as F),≤% | 0.005 | |
Loss on drying,% | ≤0.50 | 38.0~42.0 |
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