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hydrogen fluoride

Hydrogen Fluoride (HF), a solution of Anhydrous Hydrogen Fluoride (AHF) in water, is a colorless liquid with a pungent odour.

naturally produced

Fluoride is mostly naturally occurred in a chemically bonded form, which has a distinctive feature of releasing Fluoride when Fluorite (CaF2) is grinded. While Fluoride produced from earth crust accounts for approximately 0.007%, naturally produced Fluoride compounds mainly exist in the form of natural sediments such as CaF2 and Cyrolite.

HF Manufacture

HF is first generated in the form of HF gas by the endothermic reaction of CaF2(grinded/dried) and Sulfuric Acid (H2SO4) within the reactor, which is then purified and condensed. It is then diluted and absorbed with water to create HF of desired purity, such as HF 55%, 70%, etc.

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chemical reaction

CaF2 + H2SO4 = CaSO4

※ CaF2 (Fluorite)
CaF2 is a mineral containing Calcium and Fluoride which exists in the form of transparent or semi-transparent crystal cubic structure, Mohs hardness 4, specific gravity 3 ~ 3.25, fragile, and splintery fracture. CaF2 is mainly utilized as a raw material of HF acid, additives for Ceramics and smelting process. CaF2 is reserved in large quantities in China, Mexico, South Africa, France, Spain, Mongolia, and Vietnam, while China, Mexico, South Africa, Mongolia, and Spain constitute approximately 80% of worldwide production.
※ H2SO4 (Sulfuric acid)

H2SO4 is a colourless, non-volatile liquid which is manufactured industrially using Platinum or Vanadium Pentoxide catalyst. It is the second most commonly manufactured after water, and is a highly acidic chemical compound with a powerful dehydrating property. Its tendency to absorb hydrogen and oxygen from chemical compounds makes it a common ingredient in various desiccants and dehydrants.
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