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HBFC-133a Refrigerant Transition Blend from Japan

Temporary refrigerant mixture containing HBFC-133a (CHFBrCH2F) for legacy chiller systems during phase-out transitions. Falls under HTS 3827.12.00.00 as an HBFC-containing mixture of halogenated propane derivatives. Primarily used in industrial refrigeration retrofits.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Secure essential-use exemption from UNEP Montreal Protocol for any HBFC refrigerant imports post-1996 ban

Provide equipment compatibility certification showing no CFC/HFC alternatives exist for specific application