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Potassium phosphate tribasic is a reagent with a very high buffering capacity. It is widely used in molecular biology, biochemistry, and chromatography, used for the extraction of keratohyalin protein from bovine tissue, to study the effects of freezing and thawing on the stability of proteins sensitive to conformational changes. It is used as a food additive for its properties as an emulsifier, foaming agent, and whipping agent.
L. van den Berg; Dyson Rose. Effect of freezing on the pH and composition of sodium and potassium phosphate solutions: the reciprocal system KH2PO4?Na2HPO4?H2O. Arch. Biochem. Biophys.1959, 81 (2), 319-329.
Hazard Statements: H318-H335
Causes serious eye damage. May cause respiratory irritation.
Precautionary Statements: P261-P280i-P305+P351+P338-P304+P340-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray. Wear eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.