Ammonium dihydrogen phosphate
- CAS number
- 7722-76-1
- Molecular weight
- Molecular formula / chemical symbol
- NH4H2PO4
Description
White crystalline powder. Stable in the air. 1gdissolved in 2.5ml water. Slightly soluble in ethanol, insoluble in acetone. The acidic aqueous solution. The relative density of 1.80. Melting point190 ℃. Refractive index is 1.525.
Keywords: Phosphate
USES
Buffer and media preparation. Paper, wood, fiberboard, fire retardant. Fertilizer. The bread-improving agent. Food additive. This product should be kept under seal.
Report
Quality standards HG 3-1064-84
|
Item |
Analytical grade |
Chemically pure |
|
Content of not less than |
99.0 |
98.5 |
|
Aqueous reaction |
Qualified |
Qualified |
|
Max impurities,%: |
|
|
|
Clarity Test |
Qualified |
Qualified |
|
Water insoluble matter |
0.005 |
0.01 |
|
Chloride (Cl) |
0.0005 |
0.001 |
|
Nitrate (as NO3) |
0.001 |
0.002 |
|
Sulfur compounds (SO4) |
0.005 |
0.01 |
|
Alkali metals (as phosphate) |
0.2 |
0.3 |
|
Fe |
0.001 |
0.003 |
|
As |
0.0005 |
0.002 |
|
Heavy metals (as Pb) |
0.0005 |
0.001 |