phosphate, chemical
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)
specification index
Technical grade Food grade
NH4H2PO4 %≥ 98.0 98.0
P2O5 %≥ 61.0 60.0
N %≥ 12.0 12.0
PH(1%solution) 4.4-4.6 4.4-4.6
Water insoluble %≤ 0.10 0.10
Moisture %≤ 0.5 0.5
As %≤ ---- 0.0003
F %≤ ---- 0.005
Heavy metal (Pb) %≤ ---- 0.001
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