DIAMMONIUM PHOSPHATE (DAP)
Chemical formula：(NH4)2HPO4
Molecular weight：132.06
Standard executed：
HG/T4132-2010(Industrial Grade)
GB30613-2014(Food Grade)
CAS Number：7783-28-0
Properties:
White granular crystal, relative density at 1.619, melting point at 155℃, easily soluble in water, insoluble in alcohol, PH value of 1% solution is 8.0.
Application:
As a fire-prevention agent for fabric, timber and paper. 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. It contains totally 74% fertilizer elements, used as a basic raw material for N, P and K compound fertilizer.
Packing and storage:
Plastic-woven sack, with polythene inner bag, net weight 8Kg, 25Kg, 50Kg or 1000Kg. Store at a ventilated, dry place.
Technical Specifications:
NO. | Specifications | Industrila Grade | Food Grade |
1 | Main contents | MIN 99.0% | MIN 99.0% |
2 | Phosphorus pentoxide | MIN 53.0% | MIN 53.0% |
3 | Nitrogen, as N | MIN 20.8% | MIN 20.8% |
4 | PH value (1% solution) | 7.6-8.2 | 7.6-8.2 |
5 | Moisture | MAX 0.2% | MAX 0.2% |
6 | Heavy metal, as Pb | MAX 0.01% | |
7 | Arsenic, as As | MAX 0.0003% | |
8 | Fluoride, as F | MAX 0.001% | |
9 | Water insoluble | MAX 0.1% | MAX 0.10% |
10 | Pb | MAX 0.0004% |
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