Chemical reagent
Diammonium hydrogen phosphate

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 standardHG/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.


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