HS code · 6-digit subheading
HS Code 2903.29 – Unsaturated chlorinated derivatives of acyclic hydrocarbons; n.e.c. in item no. 2903.2
HS code 2903.29 is the 6-digit subheading for unsaturated chlorinated derivatives of acyclic hydrocarbons, n.e.c. in item no. 2903.2. It is used for allyl chloride, chloroprene, 1,3-Dichloropropene, hexachlorobutadiene and 3-Chloro-1-propene.
What HS 2903.29 covers
This HS code covers unsaturated chlorinated derivatives of acyclic hydrocarbons that are not specifically classified under other subheadings within 2903.2, such as vinyl chloride, trichloroethylene, or tetrachloroethylene. It encompasses a variety of specialized chemicals, often produced in smaller quantities for niche applications. Trade under this code involves specialty chemical manufacturers, research and development firms, and industries requiring specific intermediates or solvents. These compounds might be used in the synthesis of pharmaceuticals, agrochemicals, polymers, or as specialized solvents. Key things to know include the broad scope of chemicals that can fall into this "not elsewhere specified" category, necessitating careful chemical identification for accurate classification. Importers and exporters must be aware of the specific regulatory status, safety data, and environmental impact of each individual chemical, as these can vary widely. The market is driven by specific industrial and scientific demands for unique chemical properties.
- Covers
- Allyl chloride
- Chloroprene
- 1,3-Dichloropropene
- Hexachlorobutadiene
- 3-Chloro-1-propene
- Examples
- Arkema Chloroprene
- Dow Chemical 1,3-Dichloropropene
- Sigma-Aldrich Allyl Chloride
Codes often confused with 2903.29
Common mistake. This code is frequently confused with more specific unsaturated chlorinated derivatives like 290321 (vinyl chloride) or 290322 (trichloroethylene) if the chemical is not precisely identified, leading to classification errors.
Top exporters and importers of HS code 290329, 2025
In 2025, the largest exporter of HS code 290329 in UN Comtrade data was China, with 30% of world exports; the largest importer in UN Comtrade data was the United States, with 33% 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 China $68M 30% of world exports
- 2 Germany $38M 16% of world exports
- 3 Czechia $25M 11% of world exports
World total: $229M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $79M 33% of world imports
- 2 Spain $28M 12% of world imports
- 3 Netherlands $21M 9.0% of world imports
World total: $239M 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 2903.29 2
Brazil splits HS 2903.29 into 2 NCM codes, Mercosur's 8-digit tariff lines.
- 2903.29.10 HexachlorobutadieneHexaclorobutadieno
- 2903.29.90 Other unsaturated chlorinated acyclic derivativesOutros
All Brazil NCM codes in heading 29.03 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2903.29
What is HS code 290329?
HS code 290329 is a 6-digit subheading in the Harmonized System that covers: Unsaturated chlorinated derivatives of acyclic hydrocarbons; n.e.c. in item no. 2903.2. This HS code covers unsaturated chlorinated derivatives of acyclic hydrocarbons that are not specifically classified under other subheadings within 2903.2, such as vinyl chloride, trichloroethylene, or tetrachloroethylene. It encompasses a variety of specialized chemicals, often produced in smaller quantities for niche applications. Trade under this code involves specialty chemical manufacturers, research and development firms, and industries requiring specific intermediates or solvents. These compounds might be used in the synthesis of pharmaceuticals, agrochemicals, polymers, or as specialized solvents. Key things to know include the broad scope of chemicals that can fall into this "not elsewhere specified" category, necessitating careful chemical identification for accurate classification. Importers and exporters must be aware of the specific regulatory status, safety data, and environmental impact of each individual chemical, as these can vary widely. The market is driven by specific industrial and scientific demands for unique chemical properties.
What products fall under HS code 290329?
Allyl chloride, Chloroprene, 1,3-Dichloropropene, Hexachlorobutadiene, 3-Chloro-1-propene
What are common misclassifications for HS code 290329?
This code is frequently confused with more specific unsaturated chlorinated derivatives like 290321 (vinyl chloride) or 290322 (trichloroethylene) if the chemical is not precisely identified, leading to classification errors.
Which countries are the top exporters of goods under HS code 290329?
In 2025, the top exporters of HS code 290329 in UN Comtrade data were China ($68M, 30% of world exports), Germany ($38M) and Czechia ($25M). World exports came to about $229M, 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 290329?
In 2025, the top importers of HS code 290329 in UN Comtrade data were the United States ($79M, 33% of world imports), Spain ($28M) and the Netherlands ($21M). World imports came to about $239M, 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 290329 structured?
HS code 290329 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 (29) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 290329?
Brazil splits HS code 290329 into 2 NCM codes: 2903.29.10 (Hexachlorobutadiene), 2903.29.90 (Other unsaturated chlorinated acyclic derivatives). The first 6 digits of each match the HS code.