HS 293154 Trichlorfon (ISO)
Quick Answer: HS code 2931.54 specifically covers Trichlorfon (ISO), a phosphonate insecticide. This chemical compound is primarily used in agriculture and veterinary medicine for pest control. Importers and exporters should note the varying duty rates across major jurisdictions. In the UK and EU, the Most Favoured Nation (MFN) duty rate is 0.00% ad valorem. For imports into the United States, the MFN duty rate is 3.7% ad valorem. However, significant preferential duty treatment is available, with a 0.00% rate for goods originating from numerous countries under various Free Trade Agreements and preference programs (e.g., A, AU, CL, KR, MX, SG). A Column 2 duty rate of 25% applies to goods from non-MFN countries. Proper classification is crucial to leverage these preferential rates.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931540000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931540000 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931540000 | 3.7% | Free (18 programs) | ["kg"] |
Special rates available under trade agreements including USMCA, KORUS, GSP.
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
Which Trade Agreements Reduce Duties for HS 2931.54?
Imports of Trichlorfon (ISO) may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.
United States (HTSUS)
Free for USMCA, KORUS, GSP, and 15 other programs
European Union (TARIC)
Preferential rate data not yet available.
United Kingdom
Preferential rate data not yet available.
Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.
Data compiled by HSRates.
Which Preferential Rates Apply to Your Origin Country?
Select an origin country to see if preferential rates apply.
Preferential rates based on available trade agreements. Actual rates may vary.
How to Classify This HS Code?
What products does HS 293154 cover?
This subheading covers Trichlorfon (ISO), which is specifically identified by its International Organization for Standardization (ISO) common name. Trichlorfon is a phosphonate insecticide, chemically known as (RS)-dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate. As per the Harmonized System Nomenclature, Chapter 29 covers organic chemicals, and Heading 2931 specifically encompasses other organo-inorganic compounds. The WCO Explanatory Notes for Heading 2931 confirm the inclusion of specific organo-phosphorus compounds, and both the USITC Harmonized Tariff Schedule (HTS) and the EU TARIC system precisely list "Trichlorfon (ISO)" under this 8-digit subheading, ensuring consistent global classification for this particular chemical compound used primarily as a pesticide.
What falls outside HS 293154?
The following products are excluded from HS 293154: preparations containing Trichlorfon but mixed with other substances, which would typically be classified under Chapter 38, specifically Heading 3808 for insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles. For instance, a formulated insecticide spray containing Trichlorfon would fall under 3808.91. Similarly, other organo-phosphorus compounds that are not Trichlorfon, even if chemically similar, would be classified under other appropriate subheadings within Heading 2931 or other relevant organic chemical headings based on their specific chemical structure and functional groups, such as other phosphonates or phosphates.
What are common classification mistakes for HS 293154?
A common error is misclassifying Trichlorfon when it is part of a formulated product rather than in its pure, unmixed chemical form. Importers often incorrectly apply HS 293154 to retail-ready insecticide formulations, which, according to General Interpretative Rule (GRI) 3(b) and the WCO Explanatory Notes for Chapter 38, should be classified under Heading 3808 as preparations. Another mistake involves confusing Trichlorfon with other organo-phosphorus compounds, leading to incorrect classification within Heading 2931 itself. Precise chemical identification is crucial; relying solely on trade names without verifying the ISO common name or chemical structure can lead to errors, especially when dealing with similar-sounding but chemically distinct pesticides.
How should importers classify products under HS 293154?
The correct procedure for classifying products under HS 293154 involves first verifying that the product is indeed pure Trichlorfon (ISO), not a mixture or preparation. Importers and customs brokers should obtain the Certificate of Analysis (CoA) or Safety Data Sheet (SDS) from the manufacturer to confirm the chemical identity, CAS number, and purity. If the product is Trichlorfon in its unmixed chemical form, then classification under HS 293154 is appropriate, following GRI 1. If the product is a preparation containing Trichlorfon, even in high concentration, it must be classified under Heading 3808. Always consult the latest version of the USITC HTS, EU TARIC, or UK Trade Tariff for any specific national notes or rulings that might impact the classification of this specific chemical.
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FAQ
What is the Most Favored Nation (MFN) duty rate for Trichlorfon (ISO) under HS code 293154 in the United States?
For imports into the United States, the Most Favored Nation (MFN) duty rate for Trichlorfon (ISO) (HS 293154) is 3.7% ad valorem under the Harmonized Tariff Schedule of the United States (HTSUS) General column 1 rate. Importers should verify the current HTSUS through the USITC website (www.usitc.gov) for the most up-to-date information.
Are there any preferential duty rates available for Trichlorfon (ISO) (HS 293154) when importing into the United States?
Yes, preferential duty rates are available for Trichlorfon (ISO) (HS 293154) under various U.S. free trade agreements and preference programs. For eligible goods originating from countries such as Australia (AU), Bahrain (BH), Chile (CL), Colombia (CO), Israel (IL), Jordan (JO), Korea (KR), Morocco (MA), Oman (OM), Panama (PA), Peru (PE), and Singapore (SG), the duty rate can be 'Free'. Additionally, other programs like the Generalized System of Preferences (GSP) or certain African Growth and Opportunity Act (AGOA) provisions might offer duty-free treatment depending on the country of origin and specific product eligibility. Importers must ensure they meet all rules of origin and documentation requirements (e.g., certificate of origin) to claim these preferential rates. Consult the HTSUS and relevant trade agreement texts for specific country eligibility and requirements.
What are the key classification criteria for Trichlorfon (ISO) under HS code 2931.54?
HS code 2931.54 specifically covers 'Trichlorfon (ISO)'. The primary classification criterion is the chemical identity of the substance. Trichlorfon, chemically known as (RS)-dimethyl (2,2,2-trichloro-1-hydroxyethyl)phosphonate, is an organophosphorus compound. This specific subheading falls under Chapter 29, which covers 'Organic chemicals', and more precisely under heading 2931, for 'Other organo-inorganic compounds'. Importers should ensure that the chemical name, CAS number (52-68-6 for Trichlorfon), and chemical structure precisely match the description for 2931.54 to avoid misclassification. Laboratory analysis or a Certificate of Analysis (CoA) from the manufacturer may be required to substantiate the chemical identity.
What documentation is typically required for importing Trichlorfon (ISO) (HS 293154)?
Beyond standard customs documentation such as the commercial invoice, packing list, and bill of lading/air waybill, importers of Trichlorfon (ISO) (HS 293154) may require additional specific documents due to its nature as a chemical compound, potentially used as a pesticide or pharmaceutical intermediate. These may include: a Certificate of Analysis (CoA) confirming purity and chemical identity, a Safety Data Sheet (SDS) for hazard communication, and potentially import permits or registrations from regulatory bodies such as the Environmental Protection Agency (EPA) in the U.S. if it's imported for pesticide use, or the Food and Drug Administration (FDA) if it's for pharmaceutical applications. For claiming preferential duty rates, a valid Certificate of Origin (e.g., NAFTA/USMCA Certificate, EUR.1, or other FTA-specific certificates) is mandatory. Importers should always check with the relevant government agencies in the importing country for specific chemical import regulations.
How does the EU TARIC system classify Trichlorfon (ISO) and what are the duty implications for imports into the European Union?
In the European Union's TARIC system, Trichlorfon (ISO) is classified under CN code 2931 54 00 00. The standard Most Favored Nation (MFN) duty rate for imports of Trichlorfon (ISO) into the EU from third countries is 0.00% ad valorem. This 'Free' duty rate applies to goods originating from countries without specific preferential agreements. However, importers should always verify the latest TARIC data (available via the European Commission's TARIC website) as anti-dumping duties, countervailing duties, or other measures could potentially apply based on the country of origin, although none are currently listed for this specific CN code. Preferential arrangements with various countries may also confirm the 0.00% duty rate or specify other conditions.