HFC-236cb Foam Blowing Agent from Japan
1,1,1,2,2,3-Hexafluoropropane (HFC-236cb) used as a zero ODP blowing agent in polyurethane spray foam insulation for building applications. Specifically enumerated under HTS 2903.46.10.00 as a saturated fluorinated derivative. Provides superior thermal insulation properties.
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
• Boiling point verification (-1.4°C) required for blowing agent performance specs
• Thermal conductivity data needed for insulation value certification
• Phase-out schedule documentation under AIM Act for HFC imports