Difluoromethane (HFC-32) Refrigerant Gas
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with other refrigerants like R-410A (50/50 HFC-32/HFC-125)
Mixtures of fluorinated hydrocarbons not purely difluoromethane classified as chemical preparations in 3824 rather than single compounds in 2903.
If formulated as anti-freeze or heat transfer fluid for industrial use
When put up specifically for anti-freeze applications, falls under 3811 instead of base chemical classification.
If contains trace impurities making it unspecified fluorinated hydrocarbon
Other saturated fluorinated acyclic hydrocarbons not specifically difluoromethane go to residual 2903.39 provision.
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Import Tips & Compliance
• 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
Related Products under HTS 2903.42.10.00
HFC-32 Difluoromethane 99.9% Purity Cylinder
High-purity difluoromethane (HFC-32) at 99.9% concentration in 20 lb refillable steel cylinders for commercial refrigeration charging. Meets Chapter 29 note (a) as separate chemically defined organic compound without disqualifying additions. Used in split AC systems and chillers.
Difluoromethane HFC-32 for Air Conditioner Recharging
Difluoromethane specifically designated HFC-32 for recharging residential and commercial air conditioning units, supplied in DOT-approved cylinders. As a halogenated derivative of acyclic hydrocarbon (CH2F2), directly covered by 2903.42.10.00 without solvents or stabilizers altering general use.
Industrial Grade Difluoromethane HFC-32 Bulk Supply
Bulk industrial difluoromethane (HFC-32) for large-scale refrigerant blending and manufacturing, transported in ton-cylinder containers. Pure chemical compound per Chapter 29 definitions, not rendered specific-use by transport packaging. GWP of 675 makes it transitional refrigerant.
HFC-32 Difluoromethane with Stabilizer Inhibitor
Difluoromethane containing minimal polymerization inhibitor stabilizer as permitted by Chapter 29 note (f) for preservation during transport. Remains classified as pure HFC-32 under 2903.42.10.00 since addition necessary solely for safety. Used in new R-32 heat pump systems.