HS Code Subheading

Acyclic hydrocarbons; unsaturated, butene (butylene) and isomers thereof

2901.23 Subheading
Section VI — Products of the chemical or allied industries

About HS Code 290123

This category covers butene and its various isomers, such as 1-butene, 2-butene (cis and trans), and isobutylene. These unsaturated acyclic hydrocarbons are vital intermediates in the production of a wide range of chemicals and polymers. They are primarily used as co-monomers in polyethylene production, for manufacturing synthetic rubber (e.g., butyl rubber), and in the synthesis of fuel additives and specialty chemicals. International trade involves chemical companies and refiners, with major exporters often being countries with large petrochemical complexes or advanced refining capabilities, such as the United States, Saudi Arabia, and the Netherlands. Key importers include industrial nations like China, Germany, and Japan, which have significant downstream manufacturing industries. Transport typically involves specialized tankers or rail cars for liquefied gases. Market prices are influenced by crude oil and natural gas prices, as well as demand from the automotive and plastics sectors.

Products Under This Code

1-Butene, Isobutylene, Cis-2-Butene, Trans-2-Butene, Butene-1, Isobutene, Mixed Butenes

Real World Examples

ExxonMobil Chemical (producer of isobutylene), LyondellBasell (producer of 1-butene), SABIC (producer), INEOS (producer), BASF (producer)

Common Misclassification

Can be confused with other C4 hydrocarbons like 290124 (butadiene) or even 290110 (butane) if the unsaturation is overlooked. The presence of a double bond and the specific C4 structure are key.

Products Classified Under 2901.23

Industry

This code belongs to the Chemicals industry.

Trade Overview

The United States, Saudi Arabia, and the Netherlands are leading exporters, while China, Germany, and Japan are top importers.

Frequently Asked Questions

What is HS code 290123?

HS code 290123 covers: Acyclic hydrocarbons; unsaturated, butene (butylene) and isomers thereof. This category covers butene and its various isomers, such as 1-butene, 2-butene (cis and trans), and isobutylene. These unsaturated acyclic hydrocarbons are vital intermediates in the production of a wide range of chemicals and polymers. They are primarily used as co-monomers in polyethylene production, for manufacturing synthetic rubber (e.g., butyl rubber), and in the synthesis of fuel additives and specialty chemicals. International trade involves chemical companies and refiners, with major exporters often being countries with large petrochemical complexes or advanced refining capabilities, such as the United States, Saudi Arabia, and the Netherlands. Key importers include industrial nations like China, Germany, and Japan, which have significant downstream manufacturing industries. Transport typically involves specialized tankers or rail cars for liquefied gases. Market prices are influenced by crude oil and natural gas prices, as well as demand from the automotive and plastics sectors.

What products fall under HS code 290123?

1-Butene, Isobutylene, Cis-2-Butene, Trans-2-Butene, Butene-1, Isobutene, Mixed Butenes

What are common misclassifications for HS code 290123?

Can be confused with other C4 hydrocarbons like 290124 (butadiene) or even 290110 (butane) if the unsaturation is overlooked. The presence of a double bond and the specific C4 structure are key.

How is HS code 290123 structured?

HS code 290123 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (01) identify the heading, and digits 5-6 (23) specify the subheading. This code is standardized globally by the World Customs Organization.