Tripotassium phosphate

Tripotassium phosphate

Names
IUPAC name Tripotassium phosphate
Other names Potassium phosphate, tribasic
Identifiers
CAS Number	7778-53-2 Y
ChemSpider	56408 Y
Jmol interactive 3D	Image
PubChem	62657
InChI InChI=1S/3K.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3 Y Key: LWIHDJKSTIGBAC-UHFFFAOYSA-K Y
SMILES [K+].[K+].[K+].[O-]P([O-])([O-])=O
Properties
Chemical formula	K3PO4
Molar mass	212.27 g/mol
Appearance	White deliquescent powder
Density	2.564 g/cm3 (17 °C)
Melting point	1,380 °C (2,520 °F; 1,650 K)
Solubility in water	90 g/100 mL (20 °C)
Solubility in ethanol	Insoluble
Basicity (pKb)	1.6
Hazards
Main hazards	Irritant
Safety data sheet	MSDS
R-phrases	R36-R38
S-phrases	S26-S36
NFPA 704	0 2 0
Flash point	Non-flammable
Related compounds
Other cations	Trisodium phosphate Triammonium phosphate Tricalcium phosphate
Related compounds	Monopotassium phosphate Dipotassium phosphate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Tripotassium phosphate is a water-soluble ionic salt which has the chemical formula K₃PO₄. It is used as a food additive for its properties as an emulsifier, foaming agent, and whipping agent.^[1] In combination with fatty acids, it is a potential antimicrobial agent in poultry processing.^[2] As a fertilizer, its proportions of N, P₂O₅, and K₂O are 0-33-67.

References

1. ↑ "NutritionData Food Additive Identifier". NutritionData.com. 
2. ↑ Hinton, Arthur; Ingram, Kimberly D. (July 2005). "Microbicidal Activity of Tripotassium Phosphate and Fatty Acids toward Spoilage and Pathogenic Bacteria Associated with Poultry". Journal of Food Protection (7): 1336–1534.