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Pharmaceutical excipients
Disodium hydrogen phosphate anhydrous

Product name

Disodium hydrogen phosphate anhydrous

Specification

Pharmaceutical grade (USP,BP,EP,CP)

Molecular formula

Na2HPO4

CAS

7558-79-4

H.S. CODE

2835220000

Molecular weight

142

Appearance

White crystal powder

Package

25KG Woven bags or fiber drums

Property

     Colorless transparent sheet inclined department rhombus crystals, relative density 1.52, in the air, and easily easy to lose five molecules formed seven water gesso item (Na2HPO4. 7H2O). Soluble in water, not soluble in alcohol. Solution a micro alkaline reaction (0.1-1N solution PH about 9.0). In 100 ℃ lost without water gesso into things, 250 when ℃ decomposed into coke sodium.

Application:

    Used for boiler soft agent, fabric, wood and paper paper of flame retardants, glaze medicine and changzhou. Used in the production of detergent, print the detergents and dyeing with salt. In printing and dyeing industries as hydrogen peroxide bleaching stabilizer, rayon packing (enhancement of silk strength and elastic). Is manufacturing focal phosphorus sodium and other raw materials, but also of phosphate monosodium glutamate, erythromycin, penicillin, streptomycin, and sewage production processs of cultivating agent products etc. Also used in electroplating, Rou leather.

Test standard

Test items

Specification

BP2015

USP35

CP2015

Appearance

White crystal powder

White crystal powder

White crystal powder

Assay

98.0~101.0%

98.0~100.5%

98.0~100.5%

Appearance of solution

Conform

 

Conform

Reducing substances

Conform

 

Conform

Monosodium phosphate

2.5%

 

2.5%

pH

 

 

9.0~9.4

Water

1.0%

 

5.0%

Insoluble matters

 

0.4%

0.05%

Loss on dry

 

5.0%

1.0%

Carbonate

 

 

Conform

Chloride

0.02%

0.06%

0.001%

Sulfate

0.05%

0.2%

0.01%

Arsenic

0.0002%

0.0016%

0.0002%

Iron

0.002%

 

0.002%

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.

Product categories
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