Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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Pentafluorobenzonitrile is an important medicine, pesticide intermediates, with high value, good market prospects. The full development of pentafluorobenzonitrile is made from pentachlorobenzonitrile as a raw material at a higher temperature with potassium fluoride as a fluorinating agent, by replacing the chlorine atom on the benzene ring. The effects of reaction conditions such as reaction temperature, reaction time, the ratio of reaction materials, the state of potassium fluoride, the amount of solvent and the amount of solvent on the reaction yield were discussed. Under the experimental conditions, pentafluorobenzonitrile was synthesized, and the optimized process parameters of pentachlorobenzonitrile were obtained.