| Item | Standard | Test Results |
| Appearance | white crystal | white crystal |
| Main Content, as (NH4)H2PO4, % | ≥ 99.0 | 99.87 |
| Phosphoric anhydride content (P2O5)% | ≥ 61.0 | 61.66 |
| Total nitrogen content (N-NH4), % | ≥ 12.0 | 12.03 |
| Insolubles rates, % | ≤ 0.1 | 0.02 |
| Moisture, as H2O, % | ≤ 0.2 | 0.04 |
| PH value | 4.3-5.0 | 4.45 |
| Fluoride, as F, mg/kg | ≤ 10 | 5 |
| As, mg/kg | ≤3 | ＜3 |
| heavy metal, as Pb, mg/kg | ≤ 10 | ＜10 |
| CONCLUSION | PASSED | |
| Item | Standard | Test Results |
| Appearance | white crystal | white crystal |
| Main Content, as (NH4)H2PO4, % | ≥ 98.5 | 99.05 |
| Phosphoric anhydride content (P2O5), % | ≥ 60.8 | 61.1 |
| Total nitrogen content (N-NH4), % | ≥ 11.8 | 12.1 |
| Insolubles rates, % | ≤ 0.1 | 0.02 |
| Moisture, as H2O, % | ≤ 0.5 | ≤0.15 |
| PH value | 4.2-4.8 | 4.4 |
(1) Use MAP (Ammonium Dihydrogen Phosphate) is mainly used to prepare compound fertilizers, and can also be directly applied to farmland. Use as analytical reagents and buffers. MAP (Ammonium Dihydrogen Phosphate) is used as high efficiency nitrogen and phosphorus compound fertilizer.
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