|Systematic IUPAC name
Potassium monohydrogen phosphate
Phosphoric acid dipotassium salt
Potassium phosphate dibasic
3D model (JSmol)
|E number||E340(ii) (antioxidants, ...)|
CompTox Dashboard (EPA)
|Molar mass||174.2 g/mol|
|Appearance||white powder |
|Melting point||> 465 °C (869 °F; 738 K) decomposes|
|149.25 g/100 mL (20 °C)|
|Solubility||slightly soluble in alcohol|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Dipotassium phosphate (K2HPO4) (also dipotassium hydrogen orthophosphate; potassium phosphate dibasic) is a highly water-soluble salt which is often used as a fertilizer, food additive and buffering agent. It is a common source of phosphorus and potassium.
- H3PO4 + 2 KOH → K2HPO4 + 2 H2O
As a food additive, dipotassium phosphate is used in imitation dairy creamers, dry powder beverages, mineral supplements, and starter cultures. It is used in non-dairy creamers to prevent coagulation.
A 3% gel of dipotassium phosphate is used as the active ingredient in Crest Sensi-Strips, a common tooth sensitivity product.
Used in the fire suppression industry to flush agent distribution lines in restaurant fire protection systems.
- John H. Thorngate iii, Seppo Salminen , Larry A . Branen , and Michael P . Davidson, eds. (2001). "Food Phosphates". Food Additives. CRC Press. doi:10.1201/9780824741709.ch25. ISBN 978-0-8247-9343-2.CS1 maint: uses editors parameter (link)
- "dipotassium phosphate". Retrieved 2009-01-06. (uses: Food Industry)
- "Database of Select Committee on GRAS Substances (SCOGS) Reviews". Retrieved 2008-03-22. (listed as "potassium phosphate, dibasic")
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The compound is for food uses although it may be bad for consumers to eat vast amounts of it.