40 CFR Appendix A to Part 84: Appendix A to Part 84—Regulated Substances

HFCs Listed as Regulated Substances in the AIM Act 1

HFC Chemical formula Exchange value

HFC-134 CHF2 CHF2 1,100

HFC-134a CH2 FCF3 1,430

HFC-143 CH2 FCHF2 353

HFC-245fa CHF2 CH2 CF3 1,030

HFC-365mfc CF3 CH2 CF2 CH3 794

HFC-227ea CF3 CHFCF3 3,220

HFC-236cb CH2 FCF2 CF3 1,340

HFC-236ea CHF2 CHFCF3 1,370

HFC-236fa CF3 CH2CF3 9,810

HFC-245ca CH2 FCF2 CHF2 693

HFC-43-10mee CF3 CHFCHFCF2 CF3 1,640

HFC-32 CH2 F2 675

HFC-125 CHF2 CF3 3,500

HFC-143a CH3 CF3 4,470

HFC-41 CH3 F 92

HFC-152 CH2 FCH2 F 53

HFC-152a CH3 CHF2 124

HFC-23 CHF3 14,800

1 This table includes all isomers of the substances above, regardless of whether the isomer is explicitly listed on its own.