Ammonium phosphate dibasic

|Name|: Ammonium phosphate dibasic

|Synonym|: Ammonium hydrogen phosphate; diammonium phosphate

|Molecular Formula|: (NH4)2HPO4

|Molecular Weight|: 132.06

|Property|: Translucent monoclinic crystalline or white powder. Density 1.619. Freely soluble in water, insoluble in alcohol, acetone and ammonia. The aqueous solution is basic, 1% solution pH 8. Decomposes at 155¡æ. Gradually loses ammonia to form ammonium phosphate monobasic on exposure to air. Reacts with ammonia to form triammonium phosphate.

|Use|: Fireproofing textiles, paper, wood, and vegetable fibers; impregnating lamp wicks; preventing afterglow in matches; flux for soldering tin, copper, brass, and zinc; purifying sugar; in yeast cultures; in dentifrices; in corrosion inhibitors; in fertilizers.

|Technical specification |:
                                                 Enterprise standard

Appearance
White crystalline powder
Content ((NH4)2HPO4) % ≥
98
P2O5 % ≥
52.7
N % ≥
20.8
Non-soluble in water % ≤
0.1
Water % ≤
0.1

FAO/WHO standard. 1982

 
Food grade
Content ((NH4)2HPO4) % ≥
98
P205 % ≥
52.7
N % ≥
20.8
Water % ≤
0.1
Chloride % ≤
0.003
Fluoride % ≤
0.0015
As % ≤
0.0015
Heavy metal (Pb) % ≤
0.002
Non-soluble in water % ≤
0.01

 

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