Regulated Substances

HFCs Listed as Regulated Substances in the AIM Act 1 HFC Chemical formula Exchange value HFC-134 CHF 2 CHF 2 1,100 HFC-134a CH 2 FCF 3 1,430 HFC-143 CH 2 FCHF 2 353 HFC-245fa CHF 2 CH 2 CF 3 1,030 HFC-365mfc CF 3 CH 2 CF 2 CH 3 794 HFC-227ea CF 3 CHFCF 3 3,220 HFC-236cb CH 2 FCF 2 CF 3 1,340 HFC-236ea CHF 2 CHFCF 3 1,370 HFC-236fa CF 3 CH2CF 3 9,810 HFC-245ca CH 2 FCF 2 CHF 2 693 HFC-43-10mee CF 3 CHFCHFCF 2 CF 3 1,640 HFC-32 CH 2 F 2 675 HFC-125 CHF 2 CF 3 3,500 HFC-143a CH 3 CF 3 4,470 HFC-41 CH 3 F 92 HFC-152 CH 2 FCH 2 F 53 HFC-152a CH 3 CHF 2 124 HFC-23 CHF 3 14,800 1 This table includes all isomers of the substances above, regardless of whether the isomer is explicitly listed on its own. [86 FR 55222, Oct. 5, 2021]