HS Code for HFC-32

HFC-32, also known as difluoromethane, is classified under HS code 2903.42. This classification is based on its chemical structure as a saturated fluorinated derivative of an acyclic hydrocarbon. In the Harmonized System, Chapter 29 is dedicated to organic chemicals, and heading 2903 specifically addresses halogenated derivatives of hydrocarbons. HFC-32 consists of a methane backbone where two hydrogen atoms are replaced by fluorine atoms (CH2F2). Because it is a saturated compound (containing only single bonds) and is a separate chemically defined substance, it falls under the 2903.4x series. Subheading 2903.42 was specifically created to isolate difluoromethane for trade monitoring and environmental regulatory purposes. This classification is critical for importers and exporters to ensure compliance with the Kigali Amendment to the Montreal Protocol, which tracks the phase-down of hydrofluorocarbons. The code 2903.42 applies only to the pure gas; if HFC-32 is mixed with other gases, such as in the common refrigerant R-410A, the classification shifts to Chapter 38.

Products Included

• Difluoromethane (HFC-32)
• R-32 Refrigerant grade gas
• Pure HFC-32 used in chemical synthesis
• Methylene fluoride

Common Misclassification

The most common misclassification for HFC-32 is HS code 3824.78, which covers mixtures containing perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs). Many users mistakenly use this code for pure HFC-32 when it is intended for refrigerant blends like R-410A or R-407C. Additionally, it is sometimes confused with HS code 2903.41 (trifluoromethane) or 2903.39 (other fluorinated derivatives), though 2903.42 is the only correct code for pure difluoromethane.

FAQ

What is the HS code for HFC-32?

The correct HS code for pure HFC-32 (difluoromethane) is 2903.42.

Does the HS code change if HFC-32 is in a mixture?

Yes, if HFC-32 is part of a refrigerant blend or mixture, it is typically classified under HS code 3824.78 rather than 2903.42.