TY - CHAP M1 - Book, Section TI - HYDROGEN FLUORIDE AND HYDROFLUORIC ACID A1 - Villano, Janna H. A1 - Ly, Binh T. A2 - Olson, Kent R. A2 - Anderson, Ilene B. A2 - Benowitz, Neal L. A2 - Blanc, Paul D. A2 - Clark, Richard F. A2 - Kearney, Thomas E. A2 - Kim-Katz, Susan Y. A2 - Wu, Alan H. B. Y1 - 2018 N1 - T2 - Poisoning & Drug Overdose, 7e AB - Hydrogen fluoride (HF) is an irritant gas that liquefies at 19.5°C; in an aqueous solution, it produces hydrofluoric acid. HF gas is used in chemical manufacturing. In addition, it may be released from fluorosilicates, fluorocarbons, or Teflon when heated to over 350°C. Hydrofluoric acid (aqueous HF solution) is widely used as a rust remover, in glass etching, and in the manufacture of silicon semiconductor chips. Hydrofluoric acid events at the workplace were shown to be two times more likely to involve injuries compared with other acids. Poisoning usually occurs after dermal exposure, usually on the hands, although ingestions and inhalations occasionally occur. There has been one case report of chemical colitis due to a hydrofluoric acid enema. Similar toxicity can result from exposure to ammonium bifluoride and sodium fluoride. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1174606083 ER -