HS Code Subheading

Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz)

2903.51 Subheading
Section VI — Products of the chemical or allied industries

About HS Code 290351

This crucial HS code covers hydrofluoroolefins (HFOs), a new generation of unsaturated fluorinated derivatives designed to replace high-GWP HFCs. Key compounds include HFO-1234yf, rapidly becoming the standard in automotive air conditioning, and HFO-1234ze and HFO-1336mzz, used in chillers, foam blowing, and aerosols. These HFOs offer ultra-low Global Warming Potential, making them environmentally preferable. International trade in HFOs is experiencing rapid growth as industries globally transition away from HFCs to meet environmental regulations. Major chemical companies are leading the production and export, with significant demand from automotive manufacturers, HVAC-R industries, and foam producers. Importers are typically countries with large manufacturing bases for these applications. The trade is heavily influenced by environmental regulations and phase-down mandates for HFCs, positioning HFOs as key sustainable alternatives for the future.

Products Under This Code

HFO-1234yf automotive refrigerant, HFO-1234ze refrigerant, HFO-1336mzz blowing agent, low-GWP refrigerants, aerosol propellants, foam insulation agents, chiller fluids

Real World Examples

Chemours Opteon YF (HFO-1234yf), Honeywell Solstice YF (HFO-1234yf), Arkema Forane 1234yf, Honeywell Solstice ze (HFO-1234ze)

Common Misclassification

Can be confused with HFCs (2903.4x) due to similar applications, but HFOs are unsaturated and have significantly lower GWP, making the distinction critical for environmental compliance and trade regulations.

Products Classified Under 2903.51

Industry

This code belongs to the Chemicals industry.

Trade Overview

USA, European Union, and Japan are at the forefront of HFO production and adoption, with increasing global trade driven by environmental regulations.

Frequently Asked Questions

What is HS code 290351?

HS code 290351 covers: Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz). This crucial HS code covers hydrofluoroolefins (HFOs), a new generation of unsaturated fluorinated derivatives designed to replace high-GWP HFCs. Key compounds include HFO-1234yf, rapidly becoming the standard in automotive air conditioning, and HFO-1234ze and HFO-1336mzz, used in chillers, foam blowing, and aerosols. These HFOs offer ultra-low Global Warming Potential, making them environmentally preferable. International trade in HFOs is experiencing rapid growth as industries globally transition away from HFCs to meet environmental regulations. Major chemical companies are leading the production and export, with significant demand from automotive manufacturers, HVAC-R industries, and foam producers. Importers are typically countries with large manufacturing bases for these applications. The trade is heavily influenced by environmental regulations and phase-down mandates for HFCs, positioning HFOs as key sustainable alternatives for the future.

What products fall under HS code 290351?

HFO-1234yf automotive refrigerant, HFO-1234ze refrigerant, HFO-1336mzz blowing agent, low-GWP refrigerants, aerosol propellants, foam insulation agents, chiller fluids

What are common misclassifications for HS code 290351?

Can be confused with HFCs (2903.4x) due to similar applications, but HFOs are unsaturated and have significantly lower GWP, making the distinction critical for environmental compliance and trade regulations.

How is HS code 290351 structured?

HS code 290351 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (51) specify the subheading. This code is standardized globally by the World Customs Organization.