Dipotassium hydrogen phosphate, alias dipotassium hydrogen phosphate trihydrate, molecular formula: K2HPO4 · 3H2O, appearance of white crystal or amorphous white powder, soluble in water, aqueous solution is slightly alkaline, slightly soluble in alcohol, hygroscopic, temperature Autolysis at higher levels. The relative density is 2.338, and the internal dehydration of the molecule is converted to potassium pyrophosphate at 204 °C. The pH of the 1% aqueous solution was 8.9. Mainly used in medicine, fermentation, bacterial culture and preparation of potassium pyrophosphate.
