HS Code for HCFC-142b

HCFC-142b, or 1-chloro-1,1-difluoroethane, is classified under HS code 2903.74. This classification is applied because the substance is a halogenated derivative of an acyclic hydrocarbon containing two different halogens (chlorine and fluorine). Under the Harmonized System, pure chemically defined compounds are categorized in Chapter 29. Heading 2903 specifically addresses halogenated derivatives, and the subheading 2903.74 is designated for chlorodifluoroethanes. The classification is strictly based on the chemical identity of the product, which features an ethane base with one chlorine and two fluorine substituents. HCFC-142b is primarily used as a refrigerant and a blowing agent for extruded polystyrene foam. Because it is regulated under the Montreal Protocol, having a specific HS code is essential for customs authorities to manage import quotas and environmental reporting.

Products Included

• Pure 1-chloro-1,1-difluoroethane
• HCFC-142b refrigerant gas
• HCFC-142b used as an aerosol propellant
• HCFC-142b for foam blowing applications

Common Misclassification

A common misclassification occurs with HS code 2903.73, which is for dichlorofluoroethanes (HCFC-141b), due to the similarity in nomenclature. It is also sometimes confused with HS code 2903.71 (HCFC-22). Furthermore, if HCFC-142b is imported as a component of a refrigerant blend (such as R-409A), it should not be classified under 2903.74 but rather under heading 3827, which covers mixtures containing halogenated derivatives of methane, ethane, or propane.

FAQ

What is the HS code for HCFC-142b?

The specific HS code for HCFC-142b is 2903.74, categorized under chlorodifluoroethanes.

Is HCFC-142b classified differently when used in aerosols?

As long as the substance is a pure chemically defined compound, it remains under 2903.74. If it is mixed with other propellants, it moves to Chapter 38.