HS code · 6-digit subheading
HS Code 2901.24 – Acyclic hydrocarbons; unsaturated, buta-1,3-diene and isoprene
HS code 2901.24 is the 6-digit subheading for acyclic hydrocarbons, unsaturated, buta-1,3-diene and isoprene. It is used for butadiene, isoprene, buta-1,3-diene, polymerization-grade butadiene and isoprene monomer.
What HS 2901.24 covers
This HS code specifically covers buta-1,3-diene (commonly known as butadiene) and isoprene, two crucial dienes with two double bonds. These compounds are indispensable raw materials for the synthetic rubber industry, primarily used in the production of styrene-butadiene rubber (SBR), polybutadiene rubber (PBR), and polyisoprene rubber, which are vital for tires, footwear, and various industrial applications. International trade is dominated by large chemical and rubber manufacturers. Major exporters include countries with significant petrochemical cracking facilities or on-purpose production plants, such as the United States, South Korea, and Germany. Key importers are nations with large automotive and manufacturing sectors, like China, India, and Japan. These dienes are transported as liquefied gases, requiring specialized handling due to their reactivity. Their market prices are highly sensitive to crude oil and naphtha prices, as well as global automotive production trends.
- Covers
- Butadiene
- Isoprene
- Buta-1,3-diene
- Polymerization-grade butadiene
- Isoprene monomer
- Crude butadiene
- Examples
- BASF (producer of butadiene)
- LyondellBasell (producer of butadiene)
- Shell (producer of isoprene)
- Goodyear (consumer)
- Michelin (consumer)
Codes often confused with 2901.24
Common mistake. Often confused with other C4 unsaturated hydrocarbons like 290123 (butene) or even 290129 (other acyclic unsaturated hydrocarbons) if the "diene" aspect is not recognized. The presence of two double bonds is the defining characteristic.
Top exporters and importers of HS code 290124, 2025
In 2025, the largest exporter of HS code 290124 in UN Comtrade data was the Netherlands, with 17% of world exports; the largest importer in UN Comtrade data was China, with 27% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Netherlands $358M 17% of world exports
- 2 South Korea $344M 16% of world exports
- 3 Germany $200M 9.4% of world exports
World total: $2.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $636M 27% of world imports
- 2 South Korea $426M 18% of world imports
- 3 United States $256M 11% of world imports
World total: $2.3B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for 2901.24 2
Brazil splits HS 2901.24 into 2 NCM codes, Mercosur's 8-digit tariff lines.
All Brazil NCM codes in heading 29.01 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2901.24
What is HS code 290124?
HS code 290124 is a 6-digit subheading in the Harmonized System that covers: Acyclic hydrocarbons; unsaturated, buta-1,3-diene and isoprene. This HS code specifically covers buta-1,3-diene (commonly known as butadiene) and isoprene, two crucial dienes with two double bonds. These compounds are indispensable raw materials for the synthetic rubber industry, primarily used in the production of styrene-butadiene rubber (SBR), polybutadiene rubber (PBR), and polyisoprene rubber, which are vital for tires, footwear, and various industrial applications. International trade is dominated by large chemical and rubber manufacturers. Major exporters include countries with significant petrochemical cracking facilities or on-purpose production plants, such as the United States, South Korea, and Germany. Key importers are nations with large automotive and manufacturing sectors, like China, India, and Japan. These dienes are transported as liquefied gases, requiring specialized handling due to their reactivity. Their market prices are highly sensitive to crude oil and naphtha prices, as well as global automotive production trends.
What products fall under HS code 290124?
Butadiene, Isoprene, Buta-1,3-diene, Polymerization-grade butadiene, Isoprene monomer, Crude butadiene
What are common misclassifications for HS code 290124?
Often confused with other C4 unsaturated hydrocarbons like 290123 (butene) or even 290129 (other acyclic unsaturated hydrocarbons) if the "diene" aspect is not recognized. The presence of two double bonds is the defining characteristic.
Which countries are the top exporters of goods under HS code 290124?
In 2025, the top exporters of HS code 290124 in UN Comtrade data were the Netherlands ($358M, 17% of world exports), South Korea ($344M) and Germany ($200M). World exports came to about $2.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 290124?
In 2025, the top importers of HS code 290124 in UN Comtrade data were China ($636M, 27% of world imports), South Korea ($426M) and the United States ($256M). World imports came to about $2.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 290124 structured?
HS code 290124 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 (24) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 290124?
Brazil splits HS code 290124 into 2 NCM codes: 2901.24.10 (Buta-1,3-diene), 2901.24.20 (Isoprene). The first 6 digits of each match the HS code.