Ammonium salt
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DIAMMONIUM PHOSPHATE (DAP)
Guaranteed Technical Specifications
Chemical formula:(NH4)2HPO4
Molecular weight: 132.0
Standard executed: HG/T4132-2010（INDUSTRIAL GRADE）HG/T4132-2010(LOW AS GRADE)
Throughput: 100000t/a
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
Uses
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 25kg, 50kg or 1000kg. Store at a ventilated, dry place.
- Other Parameters
序号 No. | 指标名称 Specifications | 工业级 Industrial Grade | 食品级 Food Grade |
1 | 主含量[以（NH4）2HPO4计] Main content %≥ | 99.0 | 99.0 |
2 | 五氧化二磷（以P2O5计） Phosphorus pentoxide %≥ | 53.0 | 53.0 |
3 | 氮（以N计） Nitrogen, as N %≥ | 20.8 | 20.8 |
4 | PH值（1%水溶液） PH value of 1% solution | 7.6—8.2 | 7.6-8.2 |
5 | 水份 Moisture %≤ | 0.2 | 0.2 |
6 | 重金属（以Pb计） Heavy metals, as Pb %≤ | / | 0.001 |
7 | 砷（以As计） Arsenic, as As %≤ | / | 0.0003 |
8 | 氟化物（以F计） Fluoride as F %≤ | / | 0.001 |
9 | 水不溶物 Water insoluble %≤ | 0.10 | 0.10 |