HS 293146 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide
Quick Answer: HS code 2931.46 specifically covers 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide, a complex organo-phosphorus compound. This chemical is primarily used as an intermediate in various industrial syntheses, particularly in the production of specialty chemicals and pharmaceuticals. Importers and exporters should note the varying duty rates: the UK applies a 6.00% ad valorem duty, while the EU's Common Customs Tariff is 6.50% ad valorem. In the United States, the Most Favored Nation (MFN) duty rate is 3.7% ad valorem, with significant preferential duty treatment (Free) available under numerous Free Trade Agreements (e.g., A, AU, BH, CL, CO, IL, KR, MA, PA, PE, SG). Importers should verify eligibility for these preferential rates to optimize landed costs. Conversely, goods from non-MFN countries may face a 25% duty. Accurate classification is crucial to avoid delays and penalties.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931460000 | 6.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931460000 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2931460000 | 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 2931.46?
Imports of 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide 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 293146 cover?
This subheading covers 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide, a specific organo-phosphorus compound. As defined by the World Customs Organization (WCO) Harmonized System Nomenclature and reflected in national tariffs such as the USITC Harmonized Tariff Schedule of the United States (HTSUS) and the EU TARIC, this entry is precise. It specifically identifies this complex chemical structure, which is a cyclic organo-phosphorus compound containing both oxygen and phosphorus atoms within its ring system, along with propyl substituents. Its unique chemical identity ensures its distinct classification within Chapter 29, specifically under Heading 2931 for other organo-inorganic compounds.
What falls outside HS 293146?
The following products are excluded from HS 293146: other organo-phosphorus compounds that do not possess the exact chemical structure of 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide. For instance, other trioxatriphosphinane derivatives with different alkyl groups or varying numbers of oxygen or phosphorus atoms in the ring would be classified elsewhere within Heading 2931, or even in other headings of Chapter 29 if they are not organo-inorganic compounds. Simple phosphites or phosphates, which are inorganic or simpler organic esters, would typically fall under different subheadings, often within 2919 or 2835, depending on their specific chemical nature and structure, as they lack the complex cyclic organo-inorganic structure of 293146.
What are common classification mistakes for HS 293146?
A common error is misclassifying similar-looking or functionally related organo-phosphorus compounds under HS 293146, failing to adhere strictly to the chemical name provided. Importers might incorrectly apply this subheading to other trioxatriphosphinane derivatives or even to simpler organo-phosphorus compounds, overlooking the precise structural requirements. This often violates General Interpretative Rule (GRI) 1, which mandates classification according to the terms of the headings and any relative section or chapter notes, and GRI 6, which extends this principle to subheadings. Accurate classification necessitates a thorough understanding of the chemical's exact nomenclature and structural formula, ensuring it precisely matches the WCO's definition for 293146, rather than relying on general chemical family resemblances.
How should importers classify products under HS 293146?
The correct procedure for classifying products under HS 293146 involves a meticulous review of the chemical's Certificate of Analysis (CoA) and Material Safety Data Sheet (MSDS) to confirm its exact chemical name and structure. Importers and customs brokers should verify that the compound is unequivocally 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide. This requires cross-referencing with the WCO Harmonized System Explanatory Notes, the USITC HTSUS, or the EU TARIC to ensure alignment with the specific product description. If any doubt exists regarding the precise chemical identity, seeking a binding ruling from the relevant customs authority (e.g., CBP in the US, HMRC in the UK) is a prudent step to ensure compliance and avoid potential penalties or delays.
Which HS Codes Are Related?
Not the right code? Search all HS codes to find the correct tariff classification.
FAQ
What are the standard Most Favored Nation (MFN) import duty rates for HS 293146, '2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide'?
The MFN duty rates for HS 293146 can vary significantly by importing country. For example, the United States typically applies a 6.5% ad valorem duty rate under the Harmonized Tariff Schedule of the United States (HTSUS). The European Union's TARIC database may show a Common Customs Tariff (CCT) rate of 6.00% ad valorem. Other countries might have rates such as 3.7% or 25%. Importers should always consult the specific tariff schedule of the importing country (e.g., USITC HTSUS, EU TARIC, UK Trade Tariff) for the most current and accurate MFN duty rate applicable to their specific import.
Are there any preferential duty rates or free trade agreements (FTAs) that offer reduced or zero duties for HS 293146?
Yes, preferential duty rates, including duty-free entry, are available for HS 293146 under various Free Trade Agreements (FTAs) and special programs, depending on the country of origin and destination. For instance, imports into the United States may qualify for duty-free treatment (0% ad valorem) if originating from countries with which the U.S. has an FTA, 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). Similar preferential treatment may apply under the Generalized System of Preferences (GSP) or other agreements for eligible developing countries. Importers must ensure they meet the rules of origin requirements and provide proper documentation (e.g., a certificate of origin) to claim preferential treatment.
What are the key classification criteria for '2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide' under HS 2931.46?
HS 2931.46 specifically covers '2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide'. The primary classification criteria fall under Chapter 29 of the Harmonized System, which covers organic chemicals. More specifically, Heading 2931 covers 'Other organo-inorganic compounds'. The '46' subheading further specifies this particular chemical compound. Classification relies on the precise chemical name, molecular structure, and chemical properties. Customs authorities may require a Certificate of Analysis (CoA), Safety Data Sheet (SDS), or other technical specifications to verify the chemical identity and ensure correct classification. It is crucial that the product's chemical name and CAS number (if available) precisely match the description for this subheading.
What specific documentation is typically required by customs for importing HS 293146?
When importing HS 293146, standard customs documentation will be required, including a commercial invoice, packing list, and bill of lading or air waybill. Due to the chemical nature of the product, additional specific documentation is often necessary. This may include: a Certificate of Analysis (CoA) to confirm the chemical composition and purity; a Safety Data Sheet (SDS) providing information on hazards, handling, and emergency procedures; and, if claiming preferential duty rates, a valid Certificate of Origin (e.g., NAFTA, KORUS, or other FTA-specific certificates). Depending on the importing country's regulations, permits or licenses from chemical control agencies might also be required, especially if the substance has specific regulatory controls or end-use restrictions.