Simple Method for Separation Monoalkyl and Dialkyl Sodium Phosphates by Liquid Column Chromatography

Abstract This paper deals with separation of monoalkyl and dialkyl phosphates by silica gel liquid column chromatography and determination of their structures by various spectrophotometric methods. The pretreatment of the sample and the separation conditions by silica gel column chromatography were studied in detail. In the optimal conditions selected, the monoalkyl sodium phosphate and dialkyl sodium phosphate in industrial products were separated completely. In order to evaluate the separation effect of silica gel column chromatography, the structures of two kinds of alkyl sodium phosphates separated were determined by FTIR, 1H‐NMR, 31P‐NMR, and atomic emission spectroscopy.