磷酸氢二铵Di-Ammonium Phosphate( DAP)
化学式：(NH4)2HPO4
分子量：132.0
执行标准：Q/74465717-9.1-2005（工业级）
Q/74465717-9.2-2005（食品级）
性状：
白色粒状晶体，相对密度1.619,熔点155℃,易溶于水,不溶于醇,1%水溶液PH值为8.0,在空气中逐渐失去氨生成磷酸二氢铵。
用途：
主要用于木材、纸张、织物作防火剂,也用作防火涂料添加剂,还用于印刷制版和医药的制造等.在食品工业中用作发酵剂、营养剂等。在农业上作为无氯型N、P二元复合肥使用，其总养分（N+P2O5）为74%，是配制N、P、K三元复混肥的优质基础原料。
包装：
内塑外编袋、纸袋、PE袋，每袋净重25、50、1000Kg，贮于通风干燥处。
技术指标
|
序号 |
指标名称 |
工业级 |
食品级 |
|
1 |
主含量（以(NH4)2HPO4 计）%≥ |
98.0 |
98.0 |
|
2 |
***（以P2O5 计）%≥ |
53.0 |
53.0 |
|
3 |
氮（以N计）%≥ |
20.8 |
20.8 |
|
4 |
PH值 |
7.8-8.2 |
7.8-8.2 |
|
5 |
水份%≤ |
0.2 |
0.2 |
|
6 |
***（以Pb计）%≤ |
|
0.001 |
|
7 |
***（以As计）%≤ |
|
0.0003 |
|
8 |
氟化物（以F计）%≤ |
|
0.005 |
|
9 |
水不溶物%≤ |
0.10 |
0.10 |
Di-Ammonium Phosphate( DAP)
Molecular formula: (NH4)2HPO4
Molecular weight: 132.0
Standard executed: Q/744657170-9.1-2005(technical grade)
Q/74465717-9.2-2005(food grade)
CAS Number: 7783-28-0
Properties:
White granular crystal, relative density at 1.619g/cm3, 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:
In 25kg, 50kg, 1000kg net bags, store at a cool, dry and well ventilated place.
Guaranteed Technical Specificati*** :
|
No. |
Specificati*** |
Industrial Grade |
Food Grade |
|
1 |
Main content% ≥ |
98.0 |
98.0 |
|
2 |
Phosphorus pentoxide% ≥ |
53.0 |
53.0 |
|
3 |
Nitrogen, as N % ≥ |
20.8 |
20.8 |
|
4 |
PH value of 1% solution |
7.8-8.2 |
7.8-8.2 |
|
5 |
Moisture % ≤ |
0.2 |
0.2 |
|
6 |
He***y metals, as Pb %≤ |
|
0.001 |
|
7 |
Arsenic, as As% ≤ |
|
0.0003 |
|
8 |
Fluoride as F% ≤ |
|
0.005 |
|
9 |
Water insoluble % ≤ |
0.10 |
0.10 |