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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the stabilizer renders the product suitable for a specific use.
Prepared chemical products are classified under chemical products and preparations.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the stabilizer's purpose and concentration to show it is solely for preservation or transport, as required by Chapter 29 Note 1(f)
• Ensure the stabilizer is not making the product suitable for a specific use, which could change classification
• Provide the SDS and a technical data sheet to the CBSA to support the classification
Related Products 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.
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.