molecular formula: (NH4)2HPO4
CAS: 7783-28-0
Appearance:
White crystal
Properties:
White crystalline or white crystalline or powder. Have ammonia flavour. The relative density 1.619, melting point ℃ 155. Exposed to air will lose about % of 8 ammonia. Soluble in water, insoluble in alcohol.
Use:
Analytics reagents, such as PH slow granule, magnesium, zinc, nickel, etc, electrochemical analysis of precipitation agent supporting electrolyte, is also used for seed corrosion inhibitors, mixing agent, medium reagents.
Details:
|
Test item |
Specification |
|
Reagent grade |
Pharmaceutical grade |
|
Appearance |
Conform |
Conform |
|
Assay /% |
≥98.5 |
≥98.0 |
|
Clarify degrees test |
Conform |
Conform |
|
Water in soluble /% |
≤0.005 |
≤0.01 |
|
Chloride (Cl)/% |
≤0.0005 |
≤0.004 |
|
Sulfur compounds (SO4)/% |
≤0.005 |
≤0.01 |
|
Nitrate (NO3)/% |
≤0.0005 |
≤0.001 |
|
Ferric (Fe)/% |
≤0.0005 |
≤0.002 |
|
Arsenic (As) /% |
≤0.0005 |
≤0.002 |
|
Heavy metal (Pb)/% |
≤0.0005 |
≤0.001 |
|
Alkali /% |
≤0.1 |
≤0.2 |
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