Stability of BPA in Near Critical Water

Bisphenol A is not only an important chemical raw material, but also an environmental estrogen. This article examines the reactions of bisphenol A in sub-critical water. The experimental factors, such as ratio of solvent to BPA (8.0), temperature (270~330 °C), reaction time (5~60 min) and Sodium Chloride(NaOH) concentration (0~25 g·L^-1) were investigated; The decomposition products were analyzed by gas chromatography coupled with mass spectrometer qualitatively and by gas chromatography quantitatively. That stability of BPA was found to be influenced by both reaction temperature and reaction time obviously. The addition of NaOH could reduce the stability of BPA. More specifically, the stability of BPA decreased most steeply when the concentration of NaOH was from 0 g·L^-1 to 12.5 g·L^-1.