StacksVerified U.S. regulatory reference

40 CFR Part 82, Appendix K

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

Description of commodity or chemical | Commodity code from harmonized tariff schedule

Class II: |

HCFC-22 (Chlorodifluoromethane)2903.71.0000
HCFC-123 (Dichlorotrifluoroethane)2903.72.0020
HCFC-124 (Monochlorotetrafluoroethane)2903.79.1000
HCFC-141b (Dichlorofluoroethane)2903.73.0000
HCFC-142b (Chlorodifluoroethane)2903.74.0000
HCFC-225ca, HCFC-225cb (Dichloropentafluoropropanes)2903.75.0000
HCFC-21, HCFC-31, HCFC-133, and other HCFCs2903.79.9070
HCFC Mixtures (R-401A, R-402A, etc.)3824.74.0000

Class I: |

CFC-11 (Trichlorofluoromethane)2903.77.0010
CFC-12 (Dichlorodifluoromethane)2903.77.0050
CFC-113 (Trichlorotrifluoroethane)2903.77.0020
CFC-114 (Dichlorotetrafluoroethane)2903.77.0030
CFC-115 (Monochloropentafluoroethane)2903.77.0040
CFC-13, CFC-111, CFC-112, CFC-211, CFC-212, CFC-213, CFC-214, CFC-215, CFC-216, CFC-217, and other CFCs2903.77.0080
CFC Mixtures (R-500, R-502, etc.)3824.71.0100
Carbon Tetrachloride2903.14.0000
Halon 1301 (Bromotrifluoromethane)2903.76.0010
Halon, other2903.76.0050
Methyl Bromide2903.39.1520
Methyl Chloroform2903.19.6010

[85 FR 15299, Mar. 17, 2020]