Chinese Journal of Applied Chemistry ›› 1998, Vol. 0 ›› Issue (3): 85-87.

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Hydrolytic Stability of Lauryl Polyoxyethylene Phosphate

Wang Yefei, Zhao Fulin   

  1. Oil Production Chemistry Laboratory, University of Petroleum, Dongying 257062
  • Received:1997-12-02 Revised:1998-03-16 Published:1998-06-10 Online:1998-06-10

Abstract: The hydrolytic stability of lauryl polyoxyethylene phosphate in aqueous solution has been studied by using the kinetic model. The results showed that the hydrolysis reaction followed first order with respect to phosphate concentration. The activation energy increased with the pH value of the buffered solution, but the rate constant decreased as pH increased. Addition of NaCl weakly suppressed the hydrolysis.

Key words: lauryl polyoxyethylene phosphate, hydrolysis, kinetics