Potassium dihydrogen phosphate Molecular formula: KH2PO4 CAS: 7778-77-0 Appearance: White crystal powder

Properties:

Colorless sifang crystals or white crystalloid powder. The relative density 2.338. Melting point 252.6 °C. Soluble in water (90 °C 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 °C melted and transparent liquid, after cooling curing is not transparent glass shape partial potassium phosphate.

Use:

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

Details:

Test item	Specification
	Reagent grade	Pharmaceutical grade
Appearance	Conform	Conform
Assay [KH2PO4]/%	≥99.5	≥99.0
Clarify degrees test	Conform	Conform
Water insoluble/%	≤0.002	≤0.005
Dry weightlessness /%	≤0.2	≤0.3
Chloride (Cl)/%	≤0.001	≤0.005
Sulfate (SO4)/%	≤0.003	≤0.005
N/%	≤0.001	≤0.002
Sodium (Na)/%	≤0.02	≤0.05
Ferric (Fe)/%	≤0.001	≤0.005
Arsenic  (As) /%	≤0.0005	≤0.002
Heavy metal (Pb)/%	≤0.001	≤0.005

Potassium dihydrogen phosphate