Difluoromethane (HFC-32)
Halogenated derivatives of hydrocarbons. > Saturated fluorinated derivatives of acyclic hydrocarbons: > Difluoromethane (HFC-32) > Difluoromethane (HFC-32) > Difluoromethane (HFC-32)
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2903.42.00
Difluoromethane HFC-32 for Air Conditioner Recharging
Difluoromethane (HFC-32) is a saturated fluorinated derivative of acyclic hydrocarbons, specifically methane, with the chemical formula CH2F2. It is a separate chemically defined organic compound, qualifying under Chapter 29 Note 1(a). This product is supplied in DOT-approved cylinders for recharging air conditioning units, and its use does not alter its classification under tariff item 2903.42.00.
Difluoromethane (HFC-32) Refrigerant Gas
This product is pure difluoromethane (HFC-32), a saturated fluorinated derivative of acyclic hydrocarbons, used as a low-GWP refrigerant. It is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a), and is not put up for retail sale in a manner that would shift classification. It falls squarely under tariff item 2903.42.00.
HFC-32 Difluoromethane 99.9% Purity Cylinder
High-purity difluoromethane (HFC-32) at 99.9% concentration is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It is supplied in refillable steel cylinders for commercial refrigeration charging, and the packaging does not affect its classification. This product is correctly classified under tariff item 2903.42.00.
HFC-32 Difluoromethane with Stabilizer Inhibitor
Difluoromethane containing a minimal polymerization inhibitor stabilizer is still classified under tariff item 2903.42.00, as Chapter 29 Note 1(f) permits added stabilizers necessary for preservation or transport. The stabilizer does not render the product particularly suitable for a specific use, so it remains a separate chemically defined organic compound. This product is correctly classified under 2903.42.00.
Industrial Grade Difluoromethane HFC-32 Bulk Supply
Bulk industrial difluoromethane (HFC-32) is a separate chemically defined organic compound, meeting Chapter 29 Note 1(a). It is transported in ton-cylinder containers for large-scale refrigerant blending and manufacturing, but the bulk transport method does not affect its classification. This product falls under tariff item 2903.42.00.