Pharmaceutical excipients
Potassium dihydrogen phosphate

Product name

Potassium dihydrogen phosphate

Specification

Pharmaceutical grade (USP,BP,EP,CP)

Molecular formula

KH2PO4

CAS

7778-77-0

H.S. CODE

2835240000

Molecular weight

136.09

Appearance

Colorless crystal

Package

25KG Woven bags or fiber drums


Property

     Colorless sifang crystals or white crystalloid powder. The relative density 2.338. Melting point 252.6 ℃. Soluble in water (90 ℃ for improve g / 100ml canister water), become acidic aqueous solution, 1% linsuanerqingjia solution pH value is 4.6. Not soluble in alcohol. Have ChaoXie sex. Heating and 400 ℃ melted and transparent liquid, after cooling curing is not transparent glass shape partial potassium phosphate.

Application:

    Analytics reagents, such as configuration standard solution, buffer a PH. Also used in the pharmaceutical industry, piezoelectric element and electric optical components production.

Test standard

Test items

Specification

BP2015

USP35

CP2015

Appearance

Colorless crystal

Colorless crystal

Colorless crystal

Assay

98.0~100.5%

98.0~100.5%

99.0%

Appearance of solution

Conform

 

Conform

pH

4.2~4.5

 

4.2~4.5

Insoluble matters

 

0.2%

0.2%

Reducing substances

Conform

 

Conform

Loss on dry

2.0%

1.0%

0.2%

Chloride

0.02%

 

0.001%

Fluoride

 

0.001%

 

Carbonate

 

 

Conform

Phosphate

 

 

Conform

Sulfate

0.03%

 

0.003%

Arsenic

0.0002%

0.0003%

0.001%

Iron

0.001%

 

0.0002%

Lead

 

Conform

 

Sodium

0.1%

 

 

Heavy metals

0.001%

0.002%

0.001%

Storage

    Store in a cool, dry and well ventilated place. Keep away from incompatible substances. Keep container closed.

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