HS Code for Difluoromethane

Difluoromethane, commonly known in the industry as HFC-32 or R-32, is classified under HS code 2903.42. This classification falls within Chapter 29, which encompasses organic chemicals, and specifically under heading 2903 for halogenated derivatives of acyclic hydrocarbons. The subheading 2903.42 was established to specifically track saturated fluorinated derivatives. As a hydrofluorocarbon (HFC), difluoromethane is a saturated hydrocarbon where two hydrogen atoms have been replaced by fluorine. This specific code is critical for international trade monitoring under environmental protocols, such as the Kigali Amendment to the Montreal Protocol, which seeks to phase down the use of high global warming potential (GWP) gases. Accurate classification ensures that importers and exporters comply with quota systems and environmental reporting requirements.

Products Included

• Difluoromethane gas (HFC-32)
• R-32 refrigerant in pure form
• Methylene fluoride
• Fluorocarbon 32

Common Misclassification

The most frequent misclassification occurs when difluoromethane is part of a refrigerant blend. Blends containing HFCs, such as R-410A (which is a mixture of R-32 and R-125), must be classified under HS code 3824.78 rather than the pure chemical code 2903.42. Furthermore, it may be confused with other fluorinated derivatives like 1,1,1,2-tetrafluoroethane (HFC-134a), which is classified under 2903.39. It is vital to distinguish between pure substances in Chapter 29 and chemical mixtures in Chapter 38.

FAQ

What is the HS code for difluoromethane?

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

Does this code apply to R-410A refrigerant?

No, R-410A is a mixture of gases and is classified under HS code 3824.78. HS code 2903.42 is reserved for pure difluoromethane.