5. Name:  Diammonium hydrogen phosphate (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 degree celsius, 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.

Technical Specifications:  

No.  standard name  industrial grade  food grade

1  Main content(as (NH4)2HPO4)%¡Ý  99.0  99.0

2  Phosphorus pent-oxide(as P2O5)%¡Ý  53.0  53.0

3  Nitrogen(as N)%¡Ý  20.8  20.8

4  PH value  7.8-8.2  7.8-8.2

5  Moisture%¡Ü  0.2  0.2

6  Heavy metal(as Pb)%¡Ü    0.001

7  Arsenic(As)%¡Ü    0.0003

8  Fluoride(as F)%¡Ü    0.005

9  Water insoluble %¡Ü  0.10  0.10