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 Ammonium dihydrogen phosphate (MAP)
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| Molecular formula: |
NH4H2PO4 |
| Molecular weight: |
115.0 |
| Standard executed: |
Q/70894764 01-1998 |
| Properties: |
White granular crystal; relative density at 1.803, melting point at 190°C , easily soluble in water, slightly soluble in alcohol, insoluble in ketone, PH value of 1% solution is 4.5. |
| Uses: |
As a fire-prevention agent for fabric, timber and paper, as well as a fire-prevention coating, and dry powder for fire extinguisher. For food grade it is mainly used as a fermentation agent, nourishment, and so on. Used as a high effective non-chloride N, P compound fertilizer in agriculture. Its total nourishment (N+P2O5) is at 73%, and may be used as a basic raw material for N, P and K compound fertilizer. |
| Technical index: |
Specifications |
Industrial Grade |
Food Grade |
Appearance
Main contents% ™ |
White granular crystal
99.0 |
White granular crystal
99.0 |
Phosphorus pentoxide% ™ |
61.0 |
61.0 |
Nitrogen, as N % ™ |
11.8 |
11.8 |
PH of 1% water solution |
4.4-4.8 |
4.4-4.8 |
Moisture% ˜ |
0.2 |
0.2 |
Heavy metals, as Pb % ˜ |
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0.001 |
Arsenic, as As % ˜ |
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0.0003 |
Fluoride as F % ˜ |
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0.005 |
Water insoluble % ˜ |
0.10 |
0.10 |
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| Packing and storage: |
In 25kg, 50kg, 1000kg net bage, store at a cool, dry and well ventilated place. |
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