Difluoromethane (HFC-32)
Halogenated derivatives of hydrocarbons: > Saturated fluorinated derivatives of acyclic hydrocarbons: > Difluoromethane (HFC-32)
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Products classified 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.
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.