RT Book, Section
A1 Mamantov, Tanya
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.
SR Print(0)
ID 1179991479
T1 FREONS AND HALONS
T2 Poisoning & Drug Overdose, 7e
YR 2018
FD 2018
PB McGraw-Hill Education
PP New York, NY
SN 9780071839792
LK accessmedicine.mhmedical.com/content.aspx?aid=1179991479
RD 2024/04/23
AB Freons  (fluorocarbons  and  chlorofluorocarbons  [CFCs])  historically  have  been  widely  used  as  aerosol  propellants,  in  refrigeration  units,  in  the  manufacture  of  plastics,  in  foam  blowing,  metal  and  electronics  cleaning,  mobile  air  conditioning,  and  sterilization.  Although  the  use  of  CFCs  is  being  phased  out  to  avoid  further  depletion  of  stratospheric  ozone,  freons  remain  in  older  refrigeration  and  air  conditioning  systems,  and  illicit  importation  of  freons  occurs.  Most  freons  are  gases  at  room  temperature,  but  some  are  liquids  (freons  11,  21,  113,  and  114)  and  may  be  ingested.  Specialized  fire  extinguishers  contain  closely  related  compounds  known  as  halons,  which  contain  bromine,  fluorine,  and  chlorine.  HCFCs  (Hydrochlorofluorocarbons)  and  HFCs  (hydrofluorocarbons)  are  being  used  as  transitional  refrigerants  because  they  break  down  more  easily  in  the  atmosphere  than  CFCs.