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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Hydrofluoric acid and HF vapor can cause severe burns to the eyes, which may lead to permanent damage and blindness. At 10 to 15 ppm, HF vapor is irritating to the eyes, skin, and respiratory tract. Exposure to higher concentrations can result in serious damage to the lungs, and fatal pulmonary edema may develop after a delay of several hours. 

Brief exposure (5 min) to 50 to 250 ppm may be fatal to humans. Ingestion of hydrofluoric acid can produce severe injury to the mouth, throat, and gastrointestinal tract and may be fatal. HF is a clear, colorless liquid, miscible with water, with an acrid, irritating odor. It is an extremely corrosive liquid and vapor that can cause severe injury via skin and eye contact, inhalation, or ingestion.

Traditional manufacturing methods using hydrofluoric acid fluorite (calcium fluoride is the main component) is reacted with sulfuric acid, after the generation of hydrogen fluoride gas, and then distilled, cooling, etc., to obtain liquid HF, but this method is made poor purity HF, and therefore the world's major chemical manufacturers are still actively developing various methods of producing high-purity HF, in order to meet the industry needs.