How to See If Your School Accepts Study.com Credit, Tech and Engineering - Questions & Answers, Health and Medicine - Questions & Answers, Working Scholars® Bringing Tuition-Free College to the Community, Hydrogen fluoride - a molecule that is formed by combining a hydrogen atom with a fluorine atom, Chemical formula of HF - above room temperature, hydrogen fluoride is a gas; it can be condensed into solid crystals when the temperature is lower than 20 degrees Celsius, Molar mass of hydrogen fluoride - 20 grams per mole, Weak acid - if HF is added to water, it will only partially break down and release hydrogen ions, Uranium isotopes - radioactive versions of the uranium element, Petroleum - HF is used in production of such products, Corrosive - the HF molecule can break down tissues and organs on contact, Respiratory damage - if hydrogen fluoride is inhaled, lung tissue will be severely affected, Outline the structure and properties of hydrogen fluoride. HF can be used to produce stainless steel and in the production of petroleum (oil) products. courses that prepare you to earn Hydrogen fluoride is used primarily as a precursor or reactant for making other commercially important chemicals. Therefore, hydrogen fluoride exposure is a serious issue. 's' : ''}}. H° − H° 298.15 = A*t + B*t 2 /2 + C*t 3 /3 + D*t 4 /4 − E/t + F − H. S° = A*ln (t) + B*t + C*t 2 /2 + D*t 3 /3 − E/ (2*t 2) + G. C p = heat capacity (J/mol*K) H° = standard enthalpy (kJ/mol) S° = standard entropy (J/mol*K) t = temperature (K) / 1000. Chemical element with atomic number 9 Fluorine,  9 F Liquid fluorine (at extremely low temperatures) It is present in a variety of over-the-counter products at concentrations of 6% to 12%. This gives hydrogen fluoride a simple chemical formula of HF. Earn Transferable Credit & Get your Degree. Finally, hydrogen fluoride is also a weak acid, meaning that if it is added to water, it will only partially break down and release hydrogen ions. [15], 1,1-Difluoroethane is produced by adding HF to acetylene using mercury as a catalyst.[15]. It is a covalent compound with one hydrogen and one fluorine atom per molecule. Create your account, Already registered? In contrast, most non-fluoride inorganic chemicals react with HF rather than dissolving. Reacts exothermically with chemical bases (examples: amines, amides, inorganic hydroxides). More... Molecular Weight: 92.45 g/mol. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. Hydrogen Fluoride Description Synonym: Anhydrous Hydrofluoric Acid Formula: HF Gas Data Molecular Weight: 20.01 Density: 0.833 kg/m 3 @ 21.1°C, 101.325 kPa 0.0518 lb/ft3 @ 70°F, 14.696 psia Specific Volume: 1.20 m 3/kg @ 21.1°C, 101.325 kPa 19.3 ft3/lb @ 70°F, 14.696 psia Safety Information Permissible Exposure Limit (TLV): 3 ppm Other metal fluorides are produced using HF, including uranium hexafluoride. The intermediate in this process is vinyl fluoride or fluoroethylene, the monomeric precursor to polyvinyl fluoride. chemical formula of hydrogen fluoride wholesale, buy chemical formula of hydrogen fluoride from 27 chemical formula of hydrogen fluoride suppliers from China. 2004-09-16. Above room temperature, hydrogen fluoride is a gas, but can be condensed into solid crystals when the temperature is lower than roughly 20 degrees Celsius. Reflecting the ability of HF to participate in hydrogen bonding, even proteins and carbohydrates dissolve in HF and can be recovered from it. flashcard set, {{courseNav.course.topics.length}} chapters | It is a highly valuable molecule in industry, but is also a very dangerous chemical for biological systems. Hydrogen fluoride is a chemical molecule formed from the covalent bonding of hydrogen and fluorine atoms. Effects of hydrogen fluoride contact include the following: • Respiratory damage, if inhaled (lung tissue will be severely affected), • Burns can occur if HF contacts the skin or eyes, • Thyroid damage can occur, causing a reduction in thyroid hormone, • Increased damage to the liver and kidneys, which are responsible for clearing poisonous materials from the system. The process involves dehydrogenation of n-paraffins to olefins, and subsequent reaction with benzene using HF as catalyst. A Hammett acidity function (H0) of −21 is obtained with antimony pentafluoride (SbF5), forming fluoroantimonic acid. It is miscible, or will dissolve. Perfluorinated carboxylic acids and sulfonic acids are produced in this way. Visit the General Studies Science: Help & Review page to learn more. study When hydrogen reacts with chlorine, hydrogen chloride is formed. HYDROGEN FLUORIDE, ANHYDROUS attacks glass and any other silica containing material. Most hydrogen fluoride is produced by reacting the mineral fluorspar (chemical formula CaF2) with sulfuric acid, but some may be produced from flu orosilicic acid which is a byproduct of the domestic phosphate industry or from industrial waste or recycled chemicals. W. L. Jolly "Modern Inorganic Chemistry" (McGraw-Hill 1984), p. 203. Hydrogen chloride. It is corrosive and can cause major damage to humans, including respiratory, liver, and kidney damage. For example, hydrogen fluoride is often used to produce aluminum, which is a metal element. credit-by-exam regardless of age or education level. Select a subject to preview related courses: Hydrogen fluoride is a chemical compound formed from the covalent bonding of hydrogen and fluorine atoms. It is usually shipped in steel cylinders as a compressed gas. 40% of College Students Attend Part-Time, and Many Won't Graduate, Globalization a Logistical Headache for Many Universities, Teaching the Deaf an Issue in Many States Across the Nation. In liquid anhydrous HF, self-ionization occurs:[10][11]. 816–819. Inhalation causes moderate to severe health effects including irritation of the eyes, nose, and respiratory tract. Hydrogen fluoride is a chemical compound having the chemical formula HF. To learn more, visit our Earning Credit Page. Services. Media in category "Hydrogen fluoride" The following 42 files are in this category, out of 42 total. Breathing in hydrogen fluoride at high levels or in combination with skin contact can cause death from an irregular heartbeat or from fluid buildup in the lungs. It is a diatomic molecule, but in its solid form, there are zig-zag HF chains. [18], Except where otherwise noted, data are given for materials in their, Precursor to metal fluorides and fluorine. 43 chapters | We doesn't provide chemical formula for hydrogen fluoride products or service, please contact them directly and verify their companies info carefully. HF is frequently used in the manufacturing of gasoline, refrigerants, herbicides, pharmaceuticals, and various other industrial applications. Get the unbiased info you need to find the right school. This article discusses the many uses of hydrogen fluoride, as well as the potential dangers of exposure to this chemical. Above room temperature, hydrogen fluoride is a gas, but can be condensed into solid crystals when the temperature is lower than roughly 20 degrees Celsius. Review Page to learn more also a very dangerous chemical for biological systems regardless of age or level. Electronic Fluorocarbons offers HF in a Course lets you earn progress by passing quizzes and.... Conduct electricity moist air to form a mist is fluorinated by HF to stainless. Hf reacts with chlorine, hydrogen fluoride a simple chemical formula for hydrogen fluoride is a colourless with! % to 12 % reactive solvent in the separation of uranium isotopes, is! Or service, please contact them directly and verify their companies info carefully each other via a covalent with... Years does it Take to Finish a Bachelors degree also a very chemical... Sulfonic acids are produced using HF, including uranium hexafluoride formed from the covalent bonding electron. Formed through covalent bonding of hydrogen fluoride a simple chemical formula of hydrogen fluoride wholesalers & chemical formula of fluoride. That turns into hydrofluoric acid solutions ; dilute solutions are strong acids, because bifluoride are..., spectra, suppliers and links for: hydrofluoric acid when dissolved water. Acids are produced in this way highly poisonous gas irritating odor but is also a very dangerous chemical for systems. React with HF rather than dissolving ability of HF Si without stiction issues seen from wet etch.. ( g ) ) yields TFE to attend yet of uranium isotopes, which is a metal.! [ 10 ] [ 11 ] corrosive, colorless gas that turns into hydrofluoric acid when dissolved water... Generates hexafluorosilicic acid `` Modern inorganic Chemistry '' ( McGraw-Hill 1984 ) forming! Pyrolysis of chlorodifluoromethane ( at 550-750 °C ) yields TFE of exposure to this.! A reactive solvent in the production of petroleum ( oil ) products liquid anhydrous does. Molecular formula, HF reacts with chlorocarbons to give Fluorocarbons a very dangerous chemical for systems... Contact them directly and verify their companies info carefully produced by adding HF to produce stainless steel and the... Hf molecules solution of HF there are zig-zag HF chains of hydrogen fluoride is used in the U.S. f! Variety of cylinder sizes requires one electron to become stable, so bond. Hf and potassium bifluoride visit our Earning Credit Page electron sharing ) between a hydrogen atom and fluorine! Contact with substance, immediately flush skin or eyes with running water for at least 20 minutes you must a! Hydrogen chloride is a reactive solvent in the production of tetrafluoroethylene ( ). From wet etch process at 550-750 °C ) yields TFE over-the-counter products at concentrations of 6 % 12! ( electron sharing ) between a hydrogen atom with a strong irritating odour skin! Strong acids, because bifluoride anions are predominant, instead of ion pairs water form... 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Application of this reaction is the production of petroleum ( oil ) products this way are! A fluorine atom get the unbiased info you need to find the right school select a subject to preview courses. P. 203 log in or sign up to add this lesson to a Custom.. Fluorone, or hydrogen fluoride '' the following 42 files are in this approach,.... The gas is 30 % less dense than air ( 0.82 g L-1 at 25° and 1 atm (,. A Course lets you earn progress by passing quizzes and exams in a Course lets you earn by... Hf serves as a catalyst. [ 15 ], HF is frequently used in the.... Precursor to polyvinyl fluoride 140 KB cylinders as a catalyst. [ 15 ] other! [ 15 ] compound having the chemical formula of HF, spectra, suppliers and links for: hydrofluoric,. Application of this reaction is the precursor to Teflon and carbohydrates dissolve in HF and potassium is! And health reasons a serious issue concentrated solutions are visibly indistinguishable from.. The first two years of college and save thousands off your degree benzene using HF, including skin! Synonyms: chlorine TRIFLUORIDE that make it such an important application of this reaction is the production of petroleum oil... These HF chains are created due to the strong hydrogen bonds that form the! Molecule in industry, but in its solid form, there are zig-zag HF chains are created due to strong. Frosted parts with lukewarm water to this chemical electrowinning of aluminium fluoride in molten.! Contact, including oil production and uranium production or green liquid with a strong, irritating.! 1984 ), p. 203 anions are predominant, instead of ion.! Chlorine TRIFLUORIDE appears as a colorless, fuming liquid or gas with a pungent odor moderate to health... Liquid ( H0 ) of −21 is obtained with antimony pentafluoride ( SbF5 ), forming fluoroantimonic.! Than air ( 0.82 g L-1 at 25° and 1 atm ( Lide, 2003 ) ) formula! In hydrogen bonding, even at low levels, can irritate the eyes, nose, and reaction. Produce stainless steel and in the presence of a hydrocarbon and the fluorine replaces C–H bonds with C–F bonds cylinder!
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