DAP
Chemical formula: (NH4)2HPO4
Molecular weight: 132.06
Standard executed: Q/7089476401-1998
Properties: White granular crystal and relative density is 1.619, melting point is 155° C, easy to dissolve in water and not dissolve in alcohol, pH value of 1% water solution is 8.0. It will lose gradually ammonia to become ammonium dibasic phosphate.
Applications: Mainly used for the fire retardant of wood, paper and textile, and for fireproofing dope additive.
Package and storage: Plastic-woven sack with polythene inner bag, net weight per bag is 25kg, 50kg and 100kg. Keep in dry and windy conditions.
No.
|
Specifications
|
Industrial Grade
|
Food Grade
|
1
|
Main content% ≥
|
99.0
|
99.0
|
2
|
Phosphorus pentoxide% ≥
|
53.0
|
53.0
|
3
|
Nitrogen, as N % ≥
|
20.8
|
20.8
|
4
|
PH value of 1% solution
|
7.6-8.2
|
7.6-8.2
|
5
|
Moisture % ≤
|
0.2
|
0.2
|
6
|
Heavy metals, as Pb %≤
|
|
0.001
|
7
|
Arsenic, as As% ≤
|
|
0.0003
|
8
|
Fluoride as F% ≤
|
|
0.001
|
9
|
Water insoluble % ≤
|
0.10
|
0.10
|