Application of crystal modifier in the synthesis of nitrophenol potassium salts

In order to attain the amount of crystal modifier in synthesis of nitrophenol potassium salts, the grained KPA was synthesized with the nonionic surfactant that containing H in the functional group served as crystal modifier. The surface tension and data of the surfactant, which will provide theoretical support for the dosage of surfactant, was studied. The grained KPA obtained in different conditions was studied with X-ray powder diffraction and the important growth facet that has more influence on the morphology was analyzed. The results show that the surfactant can reduce the strongest diffraction peaks and affect the dominant crystal facet, so they can control crystal morphology of KPA. Grained crystal can be gained if choosing appropriate surfactant and dosage through measuring surface tension of surfactant.