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Potassium cryolite, white or off-white crystal powder, particle size: 20 mesh, 40 mesh, 100 mesh, 200 mesh, 325 mesh, chemical composition of KF-ALF3 binary system of low eutectic point composition, molecular ratio of about 1.2, melting point 557℃-580℃. Solubility in 1000g aqueous solution: 0.8g at 0℃, 1.42g at 25℃, 4.58g at 100℃. Gray potassium cryolite_potassium-based cryolite is made by reacting anhydrous hydrofluoric acid with aluminum hydroxide to form fluoroaluminic acid, then reacting with potassium hydroxide at high temperature, filtering, drying, melting and crushing. It can also be made from the reaction of aluminum fluoride, ammonium fluoride and potassium chloride.
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