Ammonium dihydrogen phosphate
- Số CAS
- 7722-76-1
- Khối lượng phân tử
- Công thức phân tử / ký hiệu hóa học
- NH4H2PO4
Mô tả
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
ỨNG DỤNG
Buffer and media preparation. Paper, wood, fiberboard, fire retardant. Fertilizer. The bread-improving agent. Food additive. This product should be kept under seal.
Phiếu kiểm nghiệm
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 |