|
Product name |
Diammonium hydrogen phosphate |
|
Specification |
Reagent grade |
|
Molecular formula |
(NH4)2HPO4 |
|
CAS |
7783-28-0 |
|
H.S. CODE |
3105300090 |
|
Molecular weight |
132.056 |
|
Appearance |
Colorless crystal |
|
Package |
25KG Woven bags or fiber drums |
Property：
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.
Application:
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.
Test standard：HG/T 3465-2012
|
Test items |
Specification |
|
|
AR grade |
CP grade |
|
|
Appearance |
无色结晶 |
无色结晶 |
|
Assay |
≥99.0% |
≥98.0% |
|
pH |
7.8~8.2 |
7.8~8.2 |
|
Appearance of solution |
合格 |
合格 |
|
Water insoluble |
≤0.005% |
≤0.01% |
|
Chloride |
≤0.0005% |
≤0.004% |
|
Sulfur compounds |
≤0.005% |
≤0.01% |
|
Nitrate |
≤0.0005% |
≤0.001% |
|
Sodium |
≤0.01% |
≤0.02% |
|
Potassium |
≤0.003% |
≤0.01% |
|
Iron |
≤0.0005% |
≤0.002% |
|
Arsenic |
≤0.0002% |
≤0.002% |
|
Heavy metals |
≤0.0005% |
≤0.001% |
Storage：
Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.
