Hydrogen fluoride. KoreaGUMI, South Korea, Oct.
Hydrogen fluoride. 1 CAS number 7664-39-3 1.
- Hydrogen fluoride This Guide should be read in conjunction with the Worksafe Australia Guide,Atmospheric Contaminants, and the National Commission publication, Exposure Standards for Atmospheric Hydrogen fluoride hydrogen fluoride | F2H2 | CID 13782998 - structure, chemical names, physical and chemical properties, classification, patents, literature Quantity Value Units Method Reference Comment; Δ r H°: 1555. Notes. : 4 Overview. It is known for strong intermolecular interactions and forms dimers and polymers. Hydrogen bonding: One of the most important interactions in nature was utilized for regulating nucleophilic fluorination. It is a key compound in the study of the structure and general properties of the nonmetals. หน้าหลัก; ถามคำถาม; เหตุการณ์ปัจจุบัน; สุ่มบทความ; เกี่ยวกับวิกิพีเดีย What is Hydrogen Fluoride? Hydrogen Fluoride also referred to as HF acid or Anhydrous HF is a clear, colorless corrosive liquid that is extremely hazardous. Together with hydrofluoric acid, it is the principal industrial source of fluorine and hence the precursor to many important compounds including pharmaceuticals and polymers (e. The Association was formed in 1975 to ensure safe production, storage, transportation and use of hydrofluoric acid. Quantity Value Units Method Reference Comment; Δ r H°: 1555. 325 kPa）下为无色、有刺激性气味的有毒气体，具有强吸湿性和腐蚀性，暴露于空气中易与水蒸气结合产生白雾（酸雾），极易溶于水，其水溶液为氢氟 Hydrogen fluoride SDS Ref. Fluorine is a naturally-occurring, pale yellow-green gas with a sharp odor. 9 Revision Date 10/26/2020 Print Date 09/09/2023 minimum of 15 minutes. Because fluorine is Hydrogen Fluoride (HF) exhibits strong molecular absorption in the bands 1255 - 1351nm, 865 - 895nm and 2. NAME 1. It is usually shipped in steel cylinders as a compressed gas. Abstract. Navy’s 1-h, 24-h, and 90 Hydrogen fluoride is a chemical compound with the formula HF. He studied the colouring matters of leaves and flowers and the composition of animal Hydrogen fluoride. Hydrogen fluoride has an abnormally high boiling point for a molecule of its size (293 K or 20 C), and can condense under cool conditions. Hydrogen fluoride (HF) is a colorless, highly irritating, corrosive gas. Sodium fluoride readily dissolves in water, but calcium fluoride does not. 01 amu Boiling point 19. 7520 -0. 75 Rats exposed to hydrogen fluoride for 5 minutes displayed moderate eye and nasal irritation at concentrations of 614mg/m 3, severe eye and nasal irritation at 1,179mg/m 3, and respiratory distress Of these PF 5 is rather short lived. A common concentration is 49% (48-52%) but there are also stronger solutions (e. It presents selected chemical and physical properties, toxicokinetic and mechanistic data, and inhalation-exposure levels from the National Research Council and other agencies. HF is widely used in the petrochemical industry and a component of many superacids. Hydrogen fluoride can be a liquid or gas at room temperature; it has a boiling point of 19. The most important natural starting material for the production of fluorine chemicals, including fluorine, hydrogen fluoride, and sodium fluoride, is the mineral fluorite (calcium fluoride [CaF2]), commonly called fluorspar. The federal government has set regulatory standards and guidelines to protect workers NEED TO KNOW: Anhydrous hydrogen fluoride (HF) is a highly corrosive, toxic, and volatile liquid or gas, usually supplied in steel cylinders. Hydrogen fluoride (fluorane) is an inorganic compound with chemical formula HF. Solutions of HF are colorless, acidic and highly corrosive. com Line Wavelength 3 (nm)1,2 Pressure Shift (pm/Torr) R(8) 1253. When dissolved in water, it forms hydroflu- Fluorides are properly defined as binary compounds or salts of fluorine and another element. Hydrofluoric acid is used as a chemical feedstock for fluorocarbons. It is miscible with water and is soluble in benzene, toluene, and concentrated sulfuric acid. 3 Synonyms Hydrogen Fluoride Hydrofluoric Acid HF Fluorohydric Acid Aqueous hydrogen fluoride Fluorwasserstaffsäuve Acide hydrofluorique Acide fluorhydrique Acide fluorique 1. When dissolved in water it is called hydrofluoric acid. It is the principal industrial source of fluorine, often in the form of hydrofluoric acid, and is an important feedstock in the preparation of many important compounds including pharmaceuticals Learn about hydrogen fluoride, a colorless gas or liquid that can cause severe damage to the body. 1 Substance Hydrogen Fluoride 1. HF:TaF 5 is a catalyst for various hydrocarbon conversions of practical importance. Judging from its chlorine analogy POCl 3 /HCl 24, POF 3 may even be more toxic than HF. 83 D HITRAN number: 14 Infrared cross-sections from PNNL Hydrogen fluoride. All statements and information are believed to be accurate and reliable, they are presented without guarantee or warranty of any kind, express or implied. 54°C. Station Road Coleshill B46 1JY Birmingham United Kingdom 01675 462424 EN (English) SDS Ref. This edition supersedes any previously released draft or final profile. : 3: The vibrational and rotational constants, were obtained from a fit to the seven lowest vibrational levels di Londardo and Douglas, 1973. sales@wavelengthreferences. In contrast to antimony pentafluoride, tantalum pentafluoride is stable in a reducing environment. Hydrogen fluoride (HF) is converted to highly corrosive hydrofluoric acid upon contact with moisture. I. If the Public Health A Toxicological Profile for Hydrogen Fluoride, and Fluorine, Draft for Public Comment was released in September 2001. Hydrogen fluoride is a compound of hydrogen and fluorine with the chemical formula HF. ± 5. George A. [2] In molecular orbital theory, the atoms are modeled to be held together by a 3-center 4-electron bond (symmetrical hydrogen bond), [3] in a sort of hybrid between a hydrogen bond and a covalent Hydrogen fluoride (HF), better known as hydrofluoric acid, is one of the basic raw materials for a wide variety of both commercial and industrial products. 4 Identification Numbers 1. This section has been established to help educate industry, government, and the public on what TLVs and BEIs are, and how TLVs and BEIs may best be used. Each peer-reviewed profile identifies and reviews the key literature that describes a hazardous substance's toxicologic properties. S. Hydrogen fluoride gas on condensation forms liquid hydrogen fluoride which is also referred to as anhydrous hydrogen fluoride or anhydrous hydrofluoric acid. Cough. Our HF gas cells can ship free space or fiber coupled and come in three styles: standard 50 Torr, low 1 2 Hydrogen fluoride (HF) is a colorless, highly reactive, and corrosive gas that is formed when hydrogen gas reacts with fluorine gas. Perhaps best known to Breaking Bad viewers, hydrogen fluoride, while potentially dangerous, is also very useful in a variety of industrial applications, such NCBI Bookshelf. Fluorine is the most electronegative and reactive of all elements; fluoride is the ionic form of fluorine. It is used as a catalyst. : 2: Absorption bands above 100000 cm-1, not yet analysed. HYDROGEN FLUORIDE, ANHYDROUS attacks glass and any other silica containing material. 2 Other numbers UN: 1052 RTECS MW7875000 Anhydrous hydrogen fluoride is produced from fluorosilicic acid by its decomposition with sulphuric acid in an improved process. KoreaGUMI, South Korea, Oct. [1] The bond strength is estimated to be greater than 155 kJ/mol. A service of the National Library of Medicine, National Institutes of Health. Other pertinent literature is also presented, but is described in less detail than the Hydrogen fluoride is a gas at room temperature. It is a highly toxic colorless gas. : SDS-070-CLP 2/11 This public health statement tells you about fluorides, hydrogen fluoride, and fluorine and the effects of exposure presented in the toxicological profile. Toxicological Profile for Fluorides, Hydrogen Fluoride, and Fluorine. Upon exposure to skin, rinsing with water followed by a treatment of calcium gluconate is required. Fluorine also combines with hydrogen to make hydrogen Eurofluor (CTEF, Comité Technique Européen du Fluor) is the Association representing the major producers and users of hydrogen fluoride (HF) and fluoride chemicals in Europe. [Note: Shipped in cylinders. It is soluble in all proportions in water (Gangolli, 1999) and is non-flammable. It is a very poisonous, colorless gas or liquid that dissolves in water to yield hydrofluoric acid. DESIGNATIONS. 1 Properties. An official website of the United States government. Find out how to respond to exposure, what signs and symptoms to look Hydrogen fluoride is a colorless chemical made of a hydrogen atom and a fluorine atom. Fluorine is a member of a group of elements known as the halogens, all of which combine with hydrogen in a similar way to form Superacids. This is due to the fact that hydrogen fluoride can form hydrogen bonds. Both are white solids. Hydrogen fluoride readily dissolves in water to form colorless hydrofluoric acid solutions; dilute Learn about the health effects, routes of exposure, and treatment of hydrogen fluoride, a corrosive and irritating chemical. These profiles were specifically prepared by ATSDR for hazardous substances which are most commonly found at facilities on the CERCLA National Priorities List (Superfund sites) and are intended to describe the effects of exposure Ammonium bifluoride is toxic to consume and a skin corrosion agent. 75 The gaseous compound formed when dry fluorine gas reacts with dry Hydrogen, gas is called hydrogen fluoride. Here’s how you know Damages from toxic gas leak worsen in southern S. K. CAS No. Fluorosilicic acid of high concentration 40-50%, free of suspended silica is decomposed while being buffered hydrogen fluoride has been developed through the addition of surfactants. 1: Two strong bands between 104000 and 116000 cm-1, not yet analysed. Examples of fluorides include sodium fluoride and calcium fluoride. The main application for hydrogen fluoride is in the manufacture of fluorocarbons. 0 ± 0. Quantity Value Units Method Reference Comment; T boil: 292. g. Olah, G. Hydrogen fluoride (HF) is the most polar diatomic molecule and one of the simplest molecules capable of hydrogen-bonding. Teflon). 55 C Dipole moment 1. Limit washing to 5 minutes if treatment What Is Hydrogen Fluoride? Hydrogen fluoride is a colorless, fuming liquid with a pungent odor, consisting of a fluorine and a hydrogen atom. 34 - 2. HF is the lightest and weakest of the hydrogen halides, and it is Hydrogen fluoride is a colorless, fuming liquid or gas with a strong, irritating odor. 008 This chapter of the profile is a health effects summary written in non-technical language. : 7664-39-3 Registry name: Hydrogen fluoride Chemical name: Hydrogen fluoride Synonyms, Trade names: Hydrogen fluoride (anhydrous), anhydrous hydrofluoric acid, AHF as aqueous solutions: hydrofluoric acid, acidum hydrofluorium. SYMPTOMS PREVENTION FIRST AID; Inhalation: Burning sensation. There has been no fluorspar mine production in the United States since フッ化水素（フッかすいそ、弗化水素、 hydrogen fluoride ）とは、水素とフッ素からなる無機化合物で、分子式が HF と表される無色の気体または液体 [2] 。 水溶液はフッ化水素酸 (hydrofluoric acid) と呼ばれ、フッ酸とも俗称される。 毒物及び劇物取締法の医薬用外毒物に指定されている。 Hydrogen fluoride >99. Hydrogen fluoride (HF) is a colourless gas with a strong irritating odour. HF boils just below room 1. 4. Fluorine and anhydrous hydrogen fluoride are naturally occurring gases that have a variety of industrial uses including the production of fluorine-containing chemicals, pharmaceuticals, high octane gasoline, and fluorescent light bulbs; aqueous hydrofluoric acid SAFETY DATA SHEET Hydrogen fluoride (100 %) 10184963 Page 4 / 17 Version 4. Hydrofluoric acid is a water solution of hydrogen fluoride; hydrofluoric acid containing 35. : SDS-070-CLP Air Liquide UK Ltd. 1 CAS number 7664-39-3 1. Fluorine is a member of a group of elements known as the halogens, all of which combine with hydrogen in a similar way to form Sodium fluoride, hydrogen fluoride, and fluorine have been named hazardous substances by the EPA. The standard Gibbs free energy of formation (G f °) of a compound is the change of Gibbs free energy that accompanies the formation of 1 mole of a substance in its standard state from its constituent elements in their standard states (the most stable form of the element at 1 bar of pressure and the specified temperature, usually 298. Go To: Top Data from NIST Standard Reference Database 69: NIST Chemistry WebBook The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. It is also used in Hydrogen Fluoride Final AEGL Document. 35% hydrogen fluoride by weight is an azeotrope with a constant boiling point of 120°C. They attack metals, glass and some forms of plastic. As much as 60 percent of hydrogen fluoride in industrial settings is used to Learn about the properties, uses, and hazards of hydrogen fluoride (HF), a toxic and corrosive gas and liquid. Sodium fluoride is often added to drinking water supplies and to a variety of dental products, including toothpastes and mouth UNII: Thuộc tính; Công thức phân tử: HF: Khối lượng mol: 20,00634 g/mol: Bề ngoài: khí hoặc chất lỏng không màu (dưới 19. Sodium fluoride dissolves easily in water, but calcium fluoride does not. May react with common metals (iron, steel) to generate flammable hydrogen gas if diluted below 65% with water. Laboured breathing. It has been confirmed as exhibiting excellent wettability, resulting in improved wet cleaning and etching without causing any roughness of the ULSI 特性 フッ化水素(HF)は強い刺激臭がある無色のガスです。 どのような割合であっても水に溶け(Gangolli, 1999)、 不燃性です。 フッ化水素ガスは酸味があり、湿った大気中では反応してミストを作ります。密度は大気より30％小さい(25 、1気圧で0. Pure hydrogen fluoride must be handled in metal or polythene vessels, while aqueous solutions will readily etch and dissolve standard laboratory glassware requiring the use of fluorinated polymer (e. 5°C) Khối lượng riêng Fluorides are naturally occurring compounds. Low levels of fluorides can help prevent dental cavities. kJ/mol: AVG: N/A: Average of 6 out of 7 values; Individual data points Quantity Value Units Method Reference Comment; Δ r G°: 1530. , Teflon) containers. Reaction with water is rapid, producing heat and hydrofluoric acid. FLUORIDES, HYDROGEN FLUORIDE, AND FLUORINE CAS # 7681-49-4, 7664-39-3, 7782-41-4 Division of Toxicology ToxFAQs TM September 2003 The bifluoride ion has a linear, centrosymmetric structure (D ∞h symmetry), with an F−H bond length of 114 pm. 9%; CAS Number: 7664-39-3; EC Number: 231-634-8; Synonyms: Hydrofluoric acid; Linear Formula: HF at Sigma-Aldrich HYDROGEN FLUORIDE: HOW TOXIC IS TOXIC? (A HAZARD AND RISK ANALYSIS) William . Surya Prakash, in Encyclopedia of Physical Science and Technology (Third Edition), 2003 II. Sore throat. 1. : 4 Hydrogen fluoride is a chemical compound. 5 C Freezing point -83. 82μm. 25 K; TRC Quantity Value Units Method Reference Comment The dangerous chemical hydrogen fluoride sits at the apex of the fluorochemical industry, but the substantial hazards linked to its production under harsh conditions (above 300 degrees Celsius Hydrogen fluoride (HF) is a chemical compound containing one hydrogen atom with a polar covalent bond to a fluorine atom. It dissolves in water to produce hydrofluoric acid, a strongly toxic corrosive acid. Find out the sources, standards, and physical properties of hydrogen Learn about hydrogen fluoride, a corrosive liquid or gas used in various industries and household products. HF is used in the manufacture of artificial cryolite; in the production of aluminum, fluorocarbons, Media in category "Hydrogen fluoride" The following 43 files are in this category, out of 43 total. 15 K or 25 °C). Its intended audience is the general public, especially people living in the vicinity of a hazardous waste site or chemical release. 7 (Yonhap) -- More than 3,000 people have received emergency care for nausea a THEO CHEM ELSEVIER Journal of Molecular Structure (Theochem) 400 (1997) 69-92 Hydrogen fluoride: a critical comparison of theoretical and experimental results David Feller3'*, Kirk A. 2 Other numbers UN: 1052 RTECS MW7875000 Hydrogen fluoride >99. The HF:TaF 5 Hydrogen fluoride Safety Data Sheet E-4608 according to the Hazardous Products Regulation (February 11, 2015) Date of issue: 10-15-1979 Revision date: 07-28-2023 Supersedes: 01-01-2021 Version: 1. It is corrosive, colourless and has a very strong odour. HF deviates from ideality both in the gas phase and in solution, and is thus of great interest from a Notes. 7: K: N/A: Streng, 1971: Uncertainty assigned by TRC = 0. Hydrogen fluoride 1 Introduction_____ This Guide outlines some of the potential health hazards associated with the use of hydrogen fluoride. Hydrogen fluoride is a compound used in dentistry to prevent dental caries. Hydrogen fluoride is highly dangerous chemical compound with the chemical formula HF, the anhydride of hydrofluoric acid. It is also released during the combustion of Hydrogen fluoride and the aqueous form hydrofluoric acid are highly corrosive and react violently with many compounds including bases causing fire and explosion hazard. Its chemical formula is HF. 12 Hydrogen Fluoride–Tantalum Pentafluoride. Hydrogen fluoride readily dissolves in water to form colorless hydrofluoric acid solutions; dilute solutions are visibly indistinguishable from water. C. 氟化氢（hydrogen fluoride），化学式为HF，极性分子，在常温常压（25 ℃、101. Brock Haskell Lahoratory, DuPont Company Newark, DE 19714 USA The purpose ofthis presentation is to review the toxicity of hydrogen fluoride (HF) especially ;IS it relates to health risks from accidental exposures, and review certain exposure limits that have been established Hydrogen fluoride is a colorless, fuming liquid or gas with a strong, irritating odor. It is a colorless gas with a strong smell and occurs naturally through processes such as volcanic activity. At high levels, fluorides can result in tooth and bone damage. Other important fluorine minerals are fluorapatite (Ca5(PO4)3F) and cryolite (Na3AlF6). [1] In water, ammonium bifluoride exists in chemical equilibrium Fluorides, hydrogen fluoride, and fluorine are chemically related. Anhydrous hydrogen fluoride is used as a fluorinating agent in chemical reactions to produce fluorinated compounds. Hydrogen fluoride and fluorine are naturally-occurring gases that are very irritating to the skin, eyes, and respiratory tract. 010 R(7) 1255. See 7. 010 R(6) 1257. 3002 -0. Anhydrous hydrogen fluoride is the starting material for the production of most fluorine compounds. It is used to make fluorine. It combines with metals to make fluorides such as sodium fluoride and calcium fluoride, both white solids. 5 ºC. 2 Group Inorganic Corrosive 1. Find out how it can affect your health, how to avoid exposure and Learn how to handle, store, and dispose of hydrogen fluoride (HF), a highly corrosive and toxic liquid or gas, in the laboratory. 5 °C, due to the strong intermolecular hydrogen bonds between the hydrogen and fluorine atoms. 82 g L-1 (Lide, 2003))。 US5427757A - Process for the production of phosphoric acid and hydrogen fluoride from phosphate rock and fluosilicic acid - Google Patents US5427757A US08/160,629 US16062993A US5427757A US 5427757 A US5427757 A US 5427757A US 16062993 A US16062993 A US 16062993A US 5427757 A US5427757 A US 5427757A Hydrogen fluoride is a highly corrosive and toxic gas that is generated from various industrial processes, such as metal processing, glass manufacturing, and semiconductor fabrication. Hydrogen Fluoride (HF) is a colorless, poisonous, liquefied gas. The committee considered all that information in its evaluation of the U. It is much more easily liquified (made into liquid) than any other hydrogen halide. Unlike the other hydrogen halides, HF has a high boiling point, of 19. Its solution in water is known as hydrofluoric acid. This Minireview describes two major types of nucleophilic fluorine sources: h Hydrogen fluoride is a corrosive and toxic gas used in industrial processes such as glass etching and metal treatment. 2 HYDROGEN FLUORIDE CHEMICALS High Potential Moderate Potential Low Potential OPPORTUNITY DESCRIPTION: Opportunity to setup hydrogen fluoride manufacturing plant with 40 –45 KMT capacity in KSA to serve regional/global market KEY DEMAND DRIVERS DEMAND INVESTMENT OVERVIEW MARKET OVERVIEW GLOBAL TRENDS MARKET SIZE, KMT 5 hydrogen fluoride, chemical compound, HF, a colorless, fuming liquid or colorless gas that boils at 19. 3845 -0. 9%; CAS Number: 7664-39-3; EC Number: 231-634-8; Synonyms: Hydrofluoric acid; Linear Formula: HF at Sigma-Aldrich Hydrogen Fluoride (HF) Molecular weight 20. These substances have been found in at least 188 of the 1,636 National Priorities List sites Hydrofluoric acid is a solution of hydrogen fluoride (HF) in water. 25 K; TRC Quantity Value Units Method Reference Comment AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! See Notes. Symbols used in the table of constants; Symbol Meaning; State: electronic state and / or symmetry symbol: T e: minimum electronic energy (cm-1): ω e: vibrational constant – first term (cm-1): ω e x e: vibrational constant – second term (cm-1): ω e y e: vibrational constant – third term (cm-1): B e: rotational constant in equilibrium position (cm-1): α e: rotational constant – Other articles where hydrogen fluoride is discussed: Edmond Frémy: isolate free fluorine and discovered hydrogen fluoride and a series of its salts. 70%) and pure HF has a Anhydrous hydrogen fluoride, Aqueous hydrogen fluoride, HF-A, Hydrofluoric acid Colorless gas or fuming liquid (below 67°F) with a strong, irritating odor. Peterson'1'1' Environmental Molecular Sciences Laboratory, MS Kl-90, Pacific Northwest National Laboratory, Richland, WA 99352, USA ''Department of Chemistry, Washington State This chapter summarizes the relevant epidemiologic and toxicologic studies of hydrogen fluoride. ] The ATSDR toxicological profile succinctly characterizes the toxicologic and adverse health effects information for the hazardous substance described here. The toxicity of HF and the derivate hydrofluoric acid is well known 22–24 while there is no toxicity data available for POF 3, which is a reactive intermediate 25 that will either react with other organic materials or with water finally generating HF. Find out the effects of exposure, PPE, spill and first aid Hydrogen fluoride is a compound of hydrogen and fluorine with the chemical formula HF. Even brief exposure can cause severe burns and respiratory damage, highlighting the need for specialised detection systems. gcwdaypd iusiw yaab ohqalc jqcvj wnnrpa owgwhfb yukmtdk ynf sdyau