HS 293142 Dimethyl propylphosphonate
Quick Answer: HS code 2931.42 specifically covers Dimethyl propylphosphonate, a chemical compound belonging to the broader category of organo-phosphorus derivatives. This product is primarily used as a flame retardant in various materials, including plastics and textiles, and as an intermediate in chemical synthesis. Importers and exporters should note the varying duty rates across major jurisdictions. In the UK, the standard Most Favoured Nation (MFN) duty rate is 6.00% ad valorem. The European Union applies an MFN rate of 6.50% ad valorem. For the United States, the MFN rate is 3.7% ad valorem, though preferential duty-free treatment is available under various Free Trade Agreements (e.g., with Australia, Korea, Mexico). A Column 2 rate of 25% applies to goods from certain non-MFN countries. Careful classification and origin determination are crucial to leverage preferential tariffs.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931420000 | 6.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931420000 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931420000 | 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 2931.42?
Imports of Dimethyl propylphosphonate 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 Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 293142 cover?
This subheading covers dimethyl propylphosphonate, a specific organo-phosphorus compound. According to the Harmonized System Nomenclature Explanatory Notes for Chapter 29, Heading 2931 encompasses other organo-inorganic compounds, which are compounds whose molecules contain one or more carbon atoms and one or more atoms of elements other than hydrogen, oxygen, or nitrogen, directly linked to carbon. Subheading 293142 specifically identifies dimethyl propylphosphonate, a phosphonate ester, which is a derivative of phosphonic acid where the hydrogen atoms of the hydroxyl groups are replaced by alkyl groups. This precise chemical definition is consistently applied across the USITC Harmonized Tariff Schedule and the EU TARIC system for customs classification purposes.
What falls outside HS 293142?
The following products are excluded from HS 293142: other phosphonates that are not dimethyl propylphosphonate, even if they are structurally similar. For instance, diethyl propylphosphonate, while also a propylphosphonate, would be classified under a different subheading within Heading 2931, likely 293190, which covers "Other organo-phosphorus compounds" not specifically enumerated. Similarly, phosphites, phosphates, or other phosphorus-containing organic compounds that are not phosphonates, or are phosphonates but lack the specific dimethyl propyl structure, would also be excluded and classified under their respective specific subheadings or the residual "other" categories within Chapter 29, ensuring precise chemical distinction.
What are common classification mistakes for HS 293142?
A common error is misclassifying other phosphonate esters or related organo-phosphorus compounds as dimethyl propylphosphonate due to structural similarities or a lack of precise chemical identification. Importers might mistakenly apply HS 293142 to compounds like dimethyl methylphosphonate or diethyl propylphosphonate, which, despite being phosphonates, possess different alkyl groups or ester functionalities. This often stems from insufficient attention to the specific chemical name and structure required by the subheading. Proper application of General Interpretative Rule (GRI) 1, which states that classification shall be determined according to the terms of the headings and any relative section or chapter notes, is crucial to avoid such errors, necessitating accurate chemical documentation.
How should importers classify products under HS 293142?
The correct procedure for classifying products under HS 293142 involves verifying the exact chemical name and structure of the imported substance to confirm it is indeed dimethyl propylphosphonate. Importers and customs brokers should obtain a Certificate of Analysis (CoA) or a Safety Data Sheet (SDS) from the manufacturer, clearly stating the chemical name, CAS number, and molecular formula. This documentation provides objective evidence that the product matches the specific description of subheading 293142. If the chemical identity is ambiguous, seeking a binding ruling from the relevant customs authority (e.g., CBP in the US, national customs authorities in the EU) is advisable to ensure compliance and avoid potential penalties for misclassification, adhering strictly to GRI 1.
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FAQ
What is the Most Favored Nation (MFN) import duty rate for HS code 2931.42 (Dimethyl propylphosphonate) in the United States, European Union, and United Kingdom?
For the United States, the MFN (General) import duty rate for HTSUS subheading 2931.42.00.00 (Dimethyl propylphosphonate) is 6.5% ad valorem, as per the Harmonized Tariff Schedule of the United States (HTSUS) 2024. In the European Union, the MFN duty rate for CN code 2931 42 00 is 6.0% ad valorem, according to the EU TARIC database. For the United Kingdom, the MFN duty rate for HS 2931 42 00 00 is 3.7% ad valorem, as published in the UK Global Tariff 2024. Importers should always verify the current rates with the respective customs authorities or official tariff publications.
Which preferential trade agreements offer duty-free treatment for Dimethyl propylphosphonate (HS 2931.42) when imported into the United States?
When importing Dimethyl propylphosphonate (HTSUS 2931.42.00.00) into the United States, several Free Trade Agreements (FTAs) and preference programs offer duty-free treatment. These include, but are not limited to, imports originating from countries under agreements such as the Australia Free Trade Agreement (AU), Bahrain Free Trade Agreement (BH), Chile Free Trade Agreement (CL), Colombia Free Trade Agreement (CO), Dominican Republic-Central America Free Trade Agreement (DR-CAFTA) (D), El Salvador (E), Israel Free Trade Agreement (IL), Jordan Free Trade Agreement (JO), Korea Free Trade Agreement (K, KR), Morocco Free Trade Agreement (MA), Oman Free Trade Agreement (OM), Panama Trade Promotion Agreement (PA), Peru Trade Promotion Agreement (PE), Singapore Free Trade Agreement (SG), and others. To claim preferential duty rates, importers must ensure the goods meet the Rules of Origin requirements of the specific agreement and provide valid origin documentation (e.g., a certificate of origin). Consult the HTSUS General Notes and specific FTA texts for detailed requirements.
What are the key classification criteria for HS code 2931.42, and how does it differentiate from other organo-phosphorous compounds?
HS code 2931.42 specifically covers 'Dimethyl propylphosphonate.' The classification falls under Chapter 29, which deals with 'Organic chemicals,' and more precisely under heading 29.31 for 'Other organo-inorganic compounds.' The key criterion for 2931.42 is the precise chemical structure: a phosphonate ester with two methyl groups and one propyl group attached to the phosphorus atom. This specificity differentiates it from other organo-phosphorous compounds within heading 29.31, which are classified based on their distinct chemical structures (e.g., other phosphonates, phosphinates, or compounds with different organic substituents). Importers and customs brokers must ensure the chemical name and structure precisely match the description to avoid misclassification. A Certificate of Analysis or chemical structure diagram can be crucial supporting documentation.
Are there any specific documentation requirements or regulatory considerations for importing Dimethyl propylphosphonate (HS 2931.42) due to its chemical nature?
Yes, beyond standard customs documentation (commercial invoice, packing list, bill of lading/air waybill), importing Dimethyl propylphosphonate (HS 2931.42) may involve additional regulatory considerations due to its chemical nature. As an organo-phosphorous compound, it could be subject to chemical control regulations depending on its end-use and concentration. For instance, in the United States, it may fall under the Toxic Substances Control Act (TSCA) administered by the EPA, requiring compliance with inventory listing or reporting. In the EU, it might be subject to REACH regulations (Registration, Evaluation, Authorisation and Restriction of Chemicals). Importers should verify if the substance is listed as a controlled substance, a precursor, or requires specific permits or notifications in the destination country. A Safety Data Sheet (SDS) is typically required and provides vital information on hazards and regulatory status. Consulting with a regulatory specialist is recommended to ensure full compliance.