Difluoromethane (HFC-32) Refrigerant Gas from Japan
Pure difluoromethane (HFC-32), a saturated fluorinated derivative of acyclic hydrocarbon methane, used as a low-GWP refrigerant in air conditioning systems. Classified under HTS 2903.42.10.00 as it matches the chemical definition of difluoromethane per Chapter 29 notes (a). Supplied in pressurized cylinders for HVAC applications.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain EPA SNAP approval and verify Significant New Alternatives Policy compliance before import due to HFC phase-down regulations
• Include Safety Data Sheets (SDS) and DOT cylinder certifications; ensure UN 3252 labeling for toxic inhalation hazard
• Monitor REACH/CLP registrations for EU transshipments; avoid common pitfall of misdeclaring purity levels affecting classification