Potassium Hydrogen Phthalate 99.8% AR Grade Reagent
Colorless monoclinic crystal or white crystalline powder. It is stable in the air and dissolved in about 12 parts of cold water, 3 parts of boiling water, slightly soluble in ethanol. The solution is acidic. The pH of the 0.05 mol/L aqueous solution at 25 ° C is 4.005. The relative density (d254) is 1.636. The melting point is 295 ~ 300 ° C (decomposition).
Analytical reagents. Benchmark the base. Prepare the buffer solution.
Item of Analysis
Transparency of solution
Insoluble in water,%
Loss on drying,%
sulfur compounds(as SO4),%
Heavy metals(as Pb),%
Not a hazardous substance or mixture.