m Recategorize. |
Lexi Marie (talk | contribs) fix information regarding 1995 and cars. |
||
Line 1: | Line 1: | ||
'''1,1,1,2-Tetrafluoroethane''', also called simply '''tetrafluoroethane''' or '''R-134a,''' is a [[refrigerant]] that has zero [[ozone depletion potential]] and thermodynamic properties similar to [[R-12]]. It has the formula CH<sub>2</sub>FCF<sub>3</sub> and a boiling point of -26.6 °C (-15.88 °F). |
'''1,1,1,2-Tetrafluoroethane''', also called simply '''tetrafluoroethane''' or '''R-134a,''' is a [[refrigerant]] that has zero [[ozone depletion potential]] and thermodynamic properties similar to [[R-12]]. It has the formula CH<sub>2</sub>FCF<sub>3</sub> and a boiling point of -26.6 °C (-15.88 °F). |
||
1,1,1,2-Tetrafluoroethane is an inert gas used primarily in automotive applications. In the United States, cars using R-134a refrigerant first appeared in |
1,1,1,2-Tetrafluoroethane is an inert gas used primarily in automotive applications. In the United States, cars using R-134a refrigerant first appeared in the early [[1990s]], and the previously used [[Dichloridofluoromethane]] (R-12) was banned by the [[Environmental Protection Agency|EPA]] for the [[1995]] model year. It is also found in "[[canned air|cans of air]]" used for [[dust|blow-dusting]] [[computer]]s and other miscellaneous items that are hard to reach or access. These cans contain tetrafluoroethane, rather than [[air]], because tetrafluoroethane can be more easily [[compressed]] into a [[liquid]] than air, yielding more gas content per volume. |
||
Contact of tetrafluoroethane with flames or hot surfaces (in excess of around 120 °F or 50 °C) may cause vapor decomposition and the emission of [[toxin|toxic]] gases. Tetrafluoroethane itself has an [[Lethal dose|LC<sub>50</sub>]] (lethal concentration) in rats of 1500 g/m<sup>3</sup>, making it relatively non-toxic. |
Contact of tetrafluoroethane with flames or hot surfaces (in excess of around 120 °F or 50 °C) may cause vapor decomposition and the emission of [[toxin|toxic]] gases. Tetrafluoroethane itself has an [[Lethal dose|LC<sub>50</sub>]] (lethal concentration) in rats of 1500 g/m<sup>3</sup>, making it relatively non-toxic. |
Revision as of 15:46, 30 August 2005
1,1,1,2-Tetrafluoroethane, also called simply tetrafluoroethane or R-134a, is a refrigerant that has zero ozone depletion potential and thermodynamic properties similar to R-12. It has the formula CH2FCF3 and a boiling point of -26.6 °C (-15.88 °F).
1,1,1,2-Tetrafluoroethane is an inert gas used primarily in automotive applications. In the United States, cars using R-134a refrigerant first appeared in the early 1990s, and the previously used Dichloridofluoromethane (R-12) was banned by the EPA for the 1995 model year. It is also found in "cans of air" used for blow-dusting computers and other miscellaneous items that are hard to reach or access. These cans contain tetrafluoroethane, rather than air, because tetrafluoroethane can be more easily compressed into a liquid than air, yielding more gas content per volume.
Contact of tetrafluoroethane with flames or hot surfaces (in excess of around 120 °F or 50 °C) may cause vapor decomposition and the emission of toxic gases. Tetrafluoroethane itself has an LC50 (lethal concentration) in rats of 1500 g/m3, making it relatively non-toxic.
Most spray cans when turned upside-down can become an effective freeze spray. Gases compressed into liquids absorb much energy upon vaporization, so liquid tetrafluoroethane will lower the temperature of objects it comes into contact with as it evaporates. Tetrafluoroethane is also used in air driers, i.e., for removing the moisture from compressed air. Moisture present in the compressed air will have a harmful effect on applications for pneumatics.