Hydrogen fluoride inhalation

Acute symptoms of hydrogen fluoride inhalation may include coughing, choking, chest tightness, fever, chills and cyanosis. Exposure to hydrogen fluoride vapor can result in pul-... 

A nonconventional synthesis of the known inhalation anaesthetic, 2-bromo-2 chloro-l,l,l-trifluoroethane (Halothane), based on the reaction of ethyl 1,2 di bromo-1,2-dicliloroethyl ether with anhydrous hydrogen fluoride and sulfur tetrafluoride, has been patented The reaction presumably involves cleavage of the ether linkage, followed by fluorination of the intermediate bromochloroacetyl halide with sulfur tetrafluoride, ethyl halides are the by-products [2] (equation 2)... 

Cyclic ethylene carbonate and its halogeno derivatives are converted into 2 2 difluoro 1,3 dioxolanes, which are useful as inhalation anaesthetics by treatment with sulfur tetrafluonde m an anhydrous hydrogen fluoride solution at 100-150 °C [239] (equation 126)... 

May cause severe and painful irritation of the eyes, nose, throat, and lungs. Severe exposure can cause accumulation of fluid in the lungs (pulmonary edema). Inhalation toxicity similar to hydrogen chloride and hydrogen fluoride. May cause second or third degree burns upon short contact with skin surfaces. Oral ingestion may result in tissue destruction of the gastrointestinal tract. Decreased blood cholinesterase levels have been reported in animals. 

Colorless gas that fumes strongly in moist air. This material is hazardous through inhalation and produces local skin/eye impacts. Hydrogen fluoride generated during decomposition poses a significant inhalation and dermal hazard. 

Ingot casting, 23 266 Ingot production, titanium, 24 857 Inhalation. See also Dust inhalation hydrogen fluoride, 14 17-18 influence on toxicity, 25 211 of PVC dust, 25 676-677 of sodium tetrasulfide, 22 875 studies of, 25 227t of sulfuric acid, 23 794 of toluene, 25 179t of VDC, 25 692-694 Inhalation anesthetics, 11 867-868 Inhalation exposure... 

The injury caused by chlorine trifluoride is in part attributed to its hydrolysis products, including chlorine, hydrogen fluoride, and chlorine dioxide. Effects in humans have not been reported but may be expected to be very severe inhalation may cause pulmonary edema, and contact with eyes or skin may cause severe burns. 

Mayer L, Geulich J Hydrogen fluoride (HF) inhalation and burns. Arch Environ Health 7 445-447, 1963... 

Braun J et ah Intoxication following the inhalation of hydrogen fluoride. Arch Toxicol 56 50-54, 1984... 

Hydrogen fluoride is a dangerous material. Its effects are serious if large quantities are inhaled or if it is allowed to remain in contact with the skin. If unwashed and untreated, a small drop of the aqueous acid on the skin will cause a painful wound. The effects are not felt... 

Both anhydrous hydrogen fluoride gas and hydrofluoric acid are highly corrosive and dangerous. Skin contact by even dilute aqueous HF can be severely injurious, causing deep ulceration with delayed effect. The acid can penetrate the skin and destroy tissues. It also is damaging to eyes, nose and lungs. Inhalation can cause fluorosis and pulmonary edema. 

Davy, Gay-Lussac, and Thenard all suffered intensely from the effects of inhaling small quantities of hydrogen fluoride. Davy found... 

Tungsten hexafluoride is an irritating and corrosive gas. In the presence of moisture, hydrogen fluoride may be formed. Special care should be taken to avoid inhalation of the vapors or contact with skin. For disposal of tungsten hexafluoride, it can be diluted with an inert gas and scrubbed in water and a caustic solution. Small amounts of tungsten hexafluoride can be decomposed by passing through columns of soda lime or slaked lime. 

DOT CLASSIFICATION 8 Label Corrosive SAFETY PROFILE Poison by inhalation. A corrosive irritant to the eyes, skin, and mucous membranes. With the appropriate conditions it undergoes hazardous reactions with formic acid, hydrogen fluoride, inorganic bases, iodides, metals, methyl hydroperoxide, oxidants (e.g., bromine, pentafluoride, chlorine trifluoride, perchloric acid, oxygen difluoride, hydrogen peroxide), 3-propynol, water. When heated to decomposition it emits toxic fumes of POx. 

One goal was to find ways to break hydrofluoric acid into elements. Chemists suspected that one element had never been seen before. Little did they know, however, what a dangerous new element it would be. During studies of hydrofluoric acid, many chemists were disabled when they inhaled hydrogen fluoride gas. One chemist, Belgian Paulin Louyet (1818-1850), died from his exposure to the chemical. 

The acute pulmonary toxicity of inhaled uranium is dependent on the chemical form of the uranium. Uranium hexafluoride is the only uranium compound that has been associated with acute effects after inhalation. Two accidents involving uranium hexafluoride have resulted in the deaths of three workers in the US uranium processing industry. However, the lethal effects were due to liberated hydrogen fluoride rather than the uranium. 

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