refrigerant gas R134a

タイトルまたは説明

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