Dipotassium phosphate (K2HPO4) - also phosphoric acid, dipotassium salt; dipotassium hydrogen orthophosphate; potassium phosphate, dibasic - is a highly water-soluble salt which is often used as a fertilizer, food additive and buffering agent. Dipotassium phosphate is a common source of phosphorus and potassium.
Dipotassium phosphate; dipotassium hydrogen phosphate. K2HPO4; mol. wt 174.18. White, somewhat hygroscopic granules. Very soluble in water, slightly in alcohol. Converted into pyrophosphate by ignition. The aq. soln. is slightly alkaline to phenolphthalein.
As a food additive, Dipotassium
phosphate is on the FDA's
Generally recognized as
safe, or GRAS, list of
substances. It is used in
non-dairy creamers to
prevent coagulation. It is
sometimes sold as a food
additive to help with
headaches.