タイトルまたは説明

Detailed Product Description HFC **4a / R**4a Refrigerant Gas ISO Tank For Air Refrigeration R**4a Refrigerant Gas of Factory Price for Air Conditioning Quick Detail: 1,1,1,*-Tetrafluoroethane, R***4a or HFC***4a, is a haloalkane refrigerant with thermodynamic properties similar to R**2 (dichlorodifluoromethane) but with less ozone depletion potential. It has the formula CH2FCF3 and a boiling point of −*6.3 °C (−*5.*4 °F) at atmospheric pressure. R***4a cylinders are colored light blue. Description: R**4a,1,1,1,*-Tetrafluoroethane first appeared in the early ***0s as a replacement for dichlorodifluoromethane (R**2), which has ozone depleting properties. 1,1,1,*-Tetrafluoroethane has been atmospherically modeled for its impact on depleting ozone and as a contributor to global warming. Research suggests that over the past *0 years the concentration of 1,1,1,*-tetrafluoroethane has increased significantly in the Earth's atmosphere, with a recent study revealing a doubling in atmospheric concentration between ***1 and ***4. UN Number ***9 CAS Number *******2 Application: R**4a,1,1,1,*-Tetrafluoroethane is an inert gas used primarily as a "high-temperature" refrigerant for domestic refrigeration and automobile air conditioners. These devices began using 1,1,1,*-tetrafluoroethane in the early ***0s as a replacement for the more environmentally harmful R**2 and retrofit kits are available to convert units that were originally R***-equipped. Other uses include plastic foam blowing, as a cleaning solvent, a propellant for the delivery of pharmaceuticals (e.g. bronchodilators), wine cork removers, gas dusters and in air driers for removing the moisture from compressed air. 1,1,1,*-Tetrafluoroethane has also been used to cool computers in some overclocking attempts. It is also commonly used as a propellant for airsoft airguns.