Product classification
HS code for Chloropicrin: 2904.91
Derivatives of hydrocarbons, trichloronitromethane (chloropicrin), whether or not halogenated.
Classification of chloropicrin under HS 2904.91
Chloropicrin, chemically known as trichloronitromethane (Cl3CNO2), is a broad-spectrum antimicrobial, fungicide, herbicide, and insecticide. In the Harmonized System, it is classified under HS code 2904.91. Heading 2904 covers sulphonated, nitrated, or nitrosated derivatives of hydrocarbons, whether or not halogenated. Chloropicrin is a nitro derivative of a halogenated methane hydrocarbon. The specific subheading 2904.91 was established to provide clear visibility for this substance due to its dual-use nature; it is used extensively in agriculture as a soil fumigant but is also a chemical warfare agent precursor. Classification follows GRI 1 and 6. Even when the product is intended for use as a fumigant, the pure chemical or technical grade substance is classified in Chapter 29. It only moves to Chapter 38 if it is formulated into a preparation or put up in retail packaging for use as a pesticide.
- Covers
- Pure trichloronitromethane (chloropicrin)
- Technical grade chloropicrin for agricultural soil treatment
- Chloropicrin used as a warning agent in odorless fuel gases
- Chloropicrin for use as a chemical intermediate
- Also under 2904.91
- Telone C-35 (Dow AgroSciences)
- Tri-Clor (AMVAC)
- Chloropicrin 100 (Terraclor)
Codes often confused with 2904.91
Common mistake. The most frequent misclassification for chloropicrin is HS code 3808.92 (fungicides) or 3808.99 (other pesticides/fumigants). While chloropicrin is a fumigant, separate chemically defined compounds are excluded from Chapter 38 and must be classified in Chapter 29. It is also sometimes confused with 2853.90 (other inorganic compounds), but as a carbon-based molecule, it is strictly organic and belongs in Chapter 29.
Top exporters and importers of HS 290491 (the code used for chloropicrin), 2025
In 2025, the largest exporter of HS 290491 (the code used for chloropicrin) in UN Comtrade data was the United States, with 59% of world exports; the largest importer in UN Comtrade data was Spain, with 32% 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 290491, not only chloropicrin.
Top exporters 2025 · share of world exports
- 1 United States $13M 59% of world exports
- 2 China $7.5M 34% of world exports
- 3 Chile $674K 3.0% of world exports
World total: $22M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Spain $7.2M 32% of world imports
- 2 Chile $3.1M 14% of world imports
- 3 Australia $2.9M 13% of world imports
World total: $22M 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 chloropicrin
Brazil classifies chloropicrin under NCM 2904.91.00: HS 2904.91 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about chloropicrin
What is the HS code for Chloropicrin?
The HS code for Chloropicrin is 290491 (Derivatives of hydrocarbons; trichloronitromethane (chloropicrin), whether or not halogenated). The HS code for chloropicrin (trichloronitromethane) is 2904.91, which specifically identifies this nitrated hydrocarbon derivative.
How do I classify Chloropicrin for customs?
Chloropicrin is classified under HS code 290491 — Derivatives of hydrocarbons; trichloronitromethane (chloropicrin), whether or not halogenated. This is a 6-digit subheading level code.
Is chloropicrin subject to the Chemical Weapons Convention (CWC)?
Yes, chloropicrin is listed as a Schedule 3 substance under the Chemical Weapons Convention, meaning its international trade is subject to strict reporting and verification requirements.
Which countries are the top exporters of chloropicrin (HS 290491)?
In 2025, the top exporters of HS 290491 (the code used for chloropicrin) in UN Comtrade data were the United States ($13M, 59% of world exports), China ($7.5M) and Chile ($674K). World exports came to about $22M, 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 chloropicrin (HS 290491)?
In 2025, the top importers of HS 290491 (the code used for chloropicrin) in UN Comtrade data were Spain ($7.2M, 32% of world imports), Chile ($3.1M) and Australia ($2.9M). World imports came to about $22M, 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 Chloropicrin the same in all countries?
The base HS code 290491 for Chloropicrin 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 chloropicrin in Brazil?
In Brazil, chloropicrin (HS 290491) is classified under NCM 2904.91.00.