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Di-
Potassium PhosphateDKP 
 
 Alias: Dipotassium hydrogen phosphate,
 CAS No. :7758-11-4
 Molecular Formula: K2HPO4
 MW: 174.17
 
Character:white crystallization or amorphous powder. It dissolves in water,and slightly soluble in Alcohol. Melting point 340 ° C Water solubility 1600 g / L (20 ° C).
 
Uses: Used for boiler water treatment. Medicine and fermentation industry; bacterial culture medium. Created the raw material of potassium pyrophosphate. It can be used as liquid fertilizer, the corrosion inhibitor of glycol antifreeze. Feed grade is used feed.
 
Quality standard(reference standard)
Specifications K2HPO4  
(Anhydrous)
 
K2HPO4.3H2O(Trihydrate)
Industrial Grade Food
Grade
Industrial Grade Food Grade
Appearance White Powder White or Colorless crystal powder
Main contents            %  ≥ 98 98 97 97
Phophorus pentoxide P2O5    % ≥ 40 40 30.2 30.2
K2O                            % ≥ 52 53 40 40
PH value 8.7-9.3 8.2-9.6 8.8-9.6 8.8-9.6
Water insoluble          % ≤ 0.1 0.1 0.25 0.25
Fluoride, as F             % ≤   0.001   0.005
Heavy metals,as Pb   %≤   0.001 0.005 0.001
Arsenic ,as As            % ≤   0.0003 0.005 0.0003
Chlorides,as Cl-            % ≤   0.05    
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