Monoammonium Phosphate (MAP)
Alias: Ammonium dihydrogen phosphate; industrial MAP;
CAS No. : 7722-76-1
Molecular formula: NH4H2PO4
MW: 115.03
Character: The melting point is 190 ° C and density is 1.02 g / ml ( 20 ° C ,storage conditions is 2-8 ° C ). It dissolved in water, and the solubility is 368g / L (20 º C).
Uses: Used as wood, paper, fabric flame retardant, fiber processing and dispersing agent in dye industries. And the agent of fire retardant coating , extinguishing agent of dry powder fire, or fermentation agent and nutritional agent in the food industry. Also used as a highly efficient N & P fertilizer.
Quality standard (reference standard)
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specification
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index
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Technical grade
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Food grade
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NH4H2PO4 %≥
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98.0
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98.0
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P2O5 %≥
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61.0
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60.0
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N %≥
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12.0
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12.0
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PH(1%solution)
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4.4-4.6
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4.4-4.6
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Water insoluble %≤
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0.10
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0.10
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Moisture %≤
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0.5
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0.5
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As %≤
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----
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0.0003
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F %≤
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----
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0.005
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Heavy metal (Pb) %≤
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----
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0.001
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