Potassium phosphate, tribasic
Agent Name
Potassium phosphate, tribasic
CAS Number
7778-53-2
Formula
O4-P.3K
Major Category
Metals
Synonyms
Phosphoric acid, tripotassium salt; Potassium orthophosphate; Potassium phosphate; Tripotassium phosphate; Phosphoric acid, potassium salt (1:3); Tripotassium orthophosphate; [ChemIDplus] Potassium phosphate, anhydrous; [Alfa Aesar MSDS]
Category
Phosphates, Metallic Salts
Description
Deliquescent solid; [Merck Index] Colorless or white odorless, hygroscopic solid; [JECFA] White granules; [Alfa Aesar MSDS]
Sources/Uses
Used as emulsifier, pH control agent, and stabilizer or thickener in foods; [ExPub: FDA] Used as buffer, sequestrant, and emulsion stabilizer in foods; [JECFA] Formerly used in hospital germicide detergents, (registration cancelled in 1986), liquid bathroom cleansers (cancelled in 1989), and laboratory bactericidal cleansers (cancelled in 1989); [NPIRS]
Comments
Maximum tolerated daily intake is 70 mg/kg (as P); [JECFA] A moderate eye irritant; Causes dermatitis in dermal lethal-dose studies of rabbits; Causes somnolence and GI changes in oral lethal-dose studies of rats; [RTECS] A skin and strong eye irritant; [Alfa Aesar MSDS]
Biomedical References
Diseases, Processes, and Activities Linked to This Agent
Processes
Industrial Processes with risk of exposure: