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Appendix A to Part 84—Regulated Substances

Regulated Substances

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Displayed edition2026-04-15
Last updated2026-04-15

Appendix A to Part 84—Regulated Substances

HFCs Listed as Regulated Substances in the AIM Act 1

HFCChemical formulaExchange value
HFC-134CHF2 CHF21,100
HFC-134aCH2 FCF31,430
HFC-143CH2 FCHF2353
HFC-245faCHF2 CH2 CF31,030
HFC-365mfcCF3 CH2 CF2 CH3794
HFC-227eaCF3 CHFCF33,220
HFC-236cbCH2 FCF2 CF31,340
HFC-236eaCHF2 CHFCF31,370
HFC-236faCF3 CH2CF39,810
HFC-245caCH2 FCF2 CHF2693
HFC-43-10meeCF3 CHFCHFCF2 CF31,640
HFC-32CH2 F2675
HFC-125CHF2 CF33,500
HFC-143aCH3 CF34,470
HFC-41CH3 F92
HFC-152CH2 FCH2 F53
HFC-152aCH3 CHF2124
HFC-23CHF314,800
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]