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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Study the composition of the aqueous ammonium fluoride solution, ammonia and potassium fluoride recovery. By adding potassium hydroxide, distilling off and giving ammonia, concentrating the remaining solution and combining it with a water-soluble, dipolar, (p) proton (with) inert solvent (such as N- Methylpyrrolidone), and the remaining water was distilled off to obtain potassium fluoride in the solvent as a slurry. Potassium fluoride slurry is used to replace chlorides with fluorides in heterocycles and aryl chlorides.