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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stabilizer creates heterocyclic compound structure
Certain ring-containing derivatives shift to Chapter 29 heterocyclic provisions.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Disclose stabilizer composition in SDS; Chapter 29 note (f) limits to necessary preservation amounts
• Classify as UN3252 (2.2+8); A2L flammability requires special ventilation labeling
• Test for stabilizer levels; excessive amounts trigger reclassification as preparation
Related Products under HTS 2903.42.10.00
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.
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.