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0102030405
Hydrogen fluoride
Product Name: Hydrogen fluoride
Abbreviation: HF
Synonyms: hydrofluoric acid, hydrofluoric acid, hydrogen fluoride, anhydrous hydrofluoric acid, agar QFS, anhydrous hydrogen fluoride, hydrofluoric acid dangerous goods
CAS: 7664-39-3
Chemical formula: FH
Molecular weight: 20.01
Einecs: 231-634-8
Structural formula: 
BRIEF DESCRIPTION
Hydrogen fluoride, with the chemical formula HF, is a polar molecule. It is a colorless, toxic gas with a pungent odor at room temperature and pressure (25 ℃, 101.325 kPa). It is highly hygroscopic and corrosive. When exposed to air, it easily combines with water vapor to produce white mist (acid mist). It is easily soluble in water, and its aqueous solution is hydrofluoric acid (monobasic weak acid). The ionization constant in aqueous solution at room temperature is 6.3×10-4 (pKa = 3.17).
USE
Plastic
Fluorine chemistry plays an increasingly important role in the nuclear industry, aerospace and other fields. Since fluorine has the strongest electronegativity (χ) in the periodic table, with a value of 4.0, the carbon-fluorine bond (CF, 458 kJ/mol) has a higher bond energy than the carbon-carbon bond (CC, 347 kJ/mol) and the carbon-hydrogen bond (CH, 414 kJ/mol).
Therefore, by introducing fluorine-containing groups into traditional hydrocarbon organic substances, special physical and chemical properties can be given to them. For example, in the field of plastics, polytetrafluoroethylene (PTFE) is known as the "king of plastics". Compared with the traditional polymer material polyethylene (PE), it exhibits better high temperature resistance, corrosion resistance and high strength. Therefore, it is used to make heat-resistant coatings (such as rocket materials) or anti-stick coatings (such as non-stick pans).
Oil Refining
In addition, hydrofluoric acid (HF) can be used as a catalyst in the alkylation process, which is used in most linear alkylbenzene production facilities around the world. This process involves the dehydrogenation of normal paraffins to olefins and the reaction with benzene in the presence of HF. For example, in a refinery, the alkylation unit produces high-octane gasoline by combining C3 and C4 olefins with isobutane.
In addition, hydrofluoric acid (HF) can be used as a catalyst in the alkylation process, which is used in most linear alkylbenzene production facilities around the world. This process involves the dehydrogenation of normal paraffins to olefins and the reaction with benzene in the presence of HF. For example, in a refinery, the alkylation unit produces high-octane gasoline by combining C3 and C4 olefins with isobutane.
Electrolysis
The key to aluminum electrolytic refining is to electrolyze aluminum fluoride in molten cryolite, and every ton of aluminum or other metal fluorides (such as uranium tetrafluoride UF4) produced requires several kilograms of hydrofluoric acid. Hydrofluoric acid is an important compound of elemental fluorine, but since anhydrous hydrofluoric acid is not conductive, potassium fluoride and hydrogen fluoride need to be added during the production process to produce fluorine.
The key to aluminum electrolytic refining is to electrolyze aluminum fluoride in molten cryolite, and every ton of aluminum or other metal fluorides (such as uranium tetrafluoride UF4) produced requires several kilograms of hydrofluoric acid. Hydrofluoric acid is an important compound of elemental fluorine, but since anhydrous hydrofluoric acid is not conductive, potassium fluoride and hydrogen fluoride need to be added during the production process to produce fluorine.
Storage and transportation
Storage: Please store anhydrous hydrogen fluoride in a dry, cool, ventilated warehouse, away from open flames and high temperatures.
Transportation: Please choose a vehicle that complies with the regulations for the transportation of dangerous goods and ensure that no leakage or damage occurs during transportation.
PACKAGE
Cylinders, tank trucks
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