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From 1930 to 1935, they developed dichlorodifluoromethane (CCl 2 F 2 or R12), trichlorofluoromethane (CCl 3 F or R11), chlorodifluoromethane (CHClF 2 or R22), trichlorotrifluoroethane (CCl 2 FCClF 2 or R113), and dichlorotetrafluoroethane (CClF 2 CClF 2 or R114), through Kinetic Chemicals which was a joint venture between DuPont and General ...
Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). ... Uses a polyolester (POE) oil. R-407C is for use in air conditioning. Uses ...
Chlorodifluoromethane (R-22 or HCFC-22), a type of Freon. [9] [10] Dichlorodifluoromethane (R-12 or CFC-12), the most commonly used Freon brand refrigerant prior to its ban in many countries in 1996 and total ban in 2010. 1,1,1,2-Tetrafluoroethane (R-134a or HFC-134a), one of the main replacements for the formerly widespread R-12.
CFCs and HCFCs are usually produced by halogen exchange starting from chlorinated methanes and ethanes. Illustrative is the synthesis of chlorodifluoromethane from chloroform: HCCl 3 + 2 HF → HCF 2 Cl + 2 HCl. Brominated derivatives are generated by free-radical reactions of hydrochlorofluorocarbons, replacing C-H bonds with C-Br bonds.
For example, R-22 has one carbon atom, one hydrogen atom (2−1 = 1), two fluorine atoms, and one chlorine atom (4−2−1 = 1), so it is chlorodifluoromethane, while R-134 has two carbon atoms (2−1 = 1), two hydrogen atoms (3−1 = 2), four fluorine atoms, and no chlorine atoms (6−2−4 = 0), so it is one of the tetrafluoroethanes. This ...
Chlorodifluoromethane: R-22 HCFC-22 CHClF 2: Trifluoromethane Fluoroform: HFC-23 In semiconductor industry, refrigerant CHF 3: Chlorofluoromethane: Freon 31 Refrigerant (phased out) CH 2 ClF: Difluoromethane: HFC-32 Refrigerant with zero ozone depletion potential: CH 2 F 2: Fluoromethane: Methyl fluoride HFC-41 Semiconductor manufacture CH 3 F ...
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[citation needed] It is a mixture of three components: chlorodifluoromethane (R-22), isobutane (R-600a), and 1-chloro-1,1-difluoroethane (R-142b) in the ratio 55/4/41. [ 1 ] This refrigerant was designed as a drop-in replacement for dichlorodifluoromethane (R-12) which is compatible with the typical mineral oil lubricants used in R-12 systems.