Product classification
HS code for Dinoseb: 2908.91
Phenol or phenol-alcohol derivatives, sulphonated, nitrated or nitrosated derivatives thereof, dinoseb (ISO) and its salts.
Classification of dinoseb under HS 2908.91
Dinoseb (ISO), a chemical compound known as 2-sec-butyl-4,6-dinitrophenol, is classified under HS code 2908.91. This classification is part of Chapter 29 (Organic Chemicals), specifically under the heading for phenol or phenol-alcohol derivatives that have been halogenated, sulphonated, nitrated, or nitrosated. Dinoseb is a nitrated derivative of phenol, which dictates its placement in this specific category. Because it is a highly regulated substance often used as a herbicide or insecticide, it is specifically named in the subheading 2908.91. The classification remains consistent whether the product is in its pure form or as a salt of the parent compound. This specific identification in the HS nomenclature helps customs authorities monitor the trade of hazardous substances regulated under international environmental agreements like the Rotterdam Convention.
- Covers
- Dinoseb (ISO)
- Dinoseb ammonium salt
- Dinoseb triethanolamine salt
- Dinoseb sodium salt
- Dinoseb acetate (when classified by the phenolic functional group)
- Also under 2908.91
- Historically produced by companies like Dow Chemical (production largely ceased)
- now primarily handled by environmental remediation firms.
Codes often confused with 2908.91
Common mistake. Dinoseb is often misclassified under HS code 3808.93, which covers herbicides and plant-growth regulators. While Dinoseb is used as a herbicide, Chapter 29 takes precedence for chemically defined pure compounds unless they are prepared as retail formulations or mixtures. It may also be confused with 2908.11 (Pentachlorophenol), though the chemical structure of nitrated vs. halogenated phenols clearly separates them.
Top exporters and importers of HS 290891 (the code used for dinoseb), 2025
In 2025, the largest exporter of HS 290891 (the code used for dinoseb) in UN Comtrade data was the United Kingdom, with 78% of world exports; the largest importer in UN Comtrade data was the Netherlands, with 26% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 290891, not only dinoseb.
Top exporters 2025 · share of world exports
- 1 United Kingdom $4.8M 78% of world exports
- 2 United States $1.2M 20% of world exports
- 3 India $68K 1.1% of world exports
World total: $6.2M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Netherlands $1.0M 26% of world imports
- 2 France $913K 23% of world imports
- 3 Poland $892K 22% of world imports
World total: $4.0M 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 code for dinoseb
Brazil classifies dinoseb under NCM 2908.91.00: HS 2908.91 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about dinoseb
What is the HS code for Dinoseb?
The HS code for Dinoseb is 290891 (Phenol or phenol-alcohol derivatives, sulphonated, nitrated or nitrosated derivatives thereof; dinoseb (ISO) and its salts). The HS code for Dinoseb and its salts is 2908.91.
How do I classify Dinoseb for customs?
Dinoseb is classified under HS code 290891 — Phenol or phenol-alcohol derivatives, sulphonated, nitrated or nitrosated derivatives thereof; dinoseb (ISO) and its salts. This is a 6-digit subheading level code.
Does this code include herbicide mixtures containing Dinoseb?
No, if the Dinoseb is mixed with other ingredients or prepared for retail sale as a herbicide, it should be classified under heading 3808.
Which countries are the top exporters of dinoseb (HS 290891)?
In 2025, the top exporters of HS 290891 (the code used for dinoseb) in UN Comtrade data were the United Kingdom ($4.8M, 78% of world exports), the United States ($1.2M) and India ($68K). World exports came to about $6.2M, 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 dinoseb (HS 290891)?
In 2025, the top importers of HS 290891 (the code used for dinoseb) in UN Comtrade data were the Netherlands ($1.0M, 26% of world imports), France ($913K) and Poland ($892K). World imports came to about $4.0M, 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.
Is the HS code for Dinoseb the same in all countries?
The base HS code 290891 for Dinoseb is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for dinoseb in Brazil?
In Brazil, dinoseb (HS 290891) is classified under NCM 2908.91.00.