Dipotassium Hydrogen Phosphate K2HPO Formula Wt.: 174.18 Cas number :- 7758-11-4 Composition :- H - 0.581% K - 44.9% O - 36.74% P - 17.78% Description :- White crystalline Powder Hygroscopic. Solubility :- In water 167 gm in 100 ml Slightly soluble in alcohol Requirements :- Assay >= 98% K2HPO4 pH of 5% solution 8.5 - 9.6 at 25oc Maximum Limits of Impurities:- Insoluble matter 0.01% Loss on drying at 105oc 1% Chloride(Cl) 0.003% Nitrogen Compounds(asN) 0.001% Sulfate(SO4) 0.005% Heavy metals(Pe) 5ppm Iron(Fe) 0.001% Sodium(Na) 0.05%
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