HS 291734 Other esters of orthophthalic acid
Quick Answer: HS code 291734, "Other esters of orthophthalic acid," primarily covers various phthalate esters not specifically classified elsewhere, such as diisononyl phthalate (DINP) or diisodecyl phthalate (DIDP). These chemical compounds are widely used as plasticizers, particularly in PVC products, to enhance flexibility and durability. Importers and exporters should note the varying duty rates: the UK applies a 6.00% ad valorem rate, while the EU's TARIC system generally shows 6.50% ad valorem. The US Harmonized Tariff Schedule (HTS) lists a general rate of 6.5% ad valorem, but offers "Free" rates under numerous Free Trade Agreements (FTAs) and preferential programs (e.g., A, AU, CL, KR, SG). Conversely, certain specific phthalate esters within this heading may face a higher Column 2 duty rate of 15.4¢/kg + 57% for goods from non-MFN countries. Due to their use as plasticizers, these products are subject to evolving regulatory scrutiny regarding environmental and health impacts, which can influence trade.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2917340050 | 6.00 % | — | — |
| 2917340060 | 6.00 % | — | — |
| 2917340070 | 6.00 % | — | — |
| 2917340010 | 6.00 % | — | — |
| 2917340000 | — | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2917340000 | — | — | — |
| 2917340010 | 6.50 % | — | — |
| 2917340015 | 6.50 % | — | — |
| 2917340020 | 6.50 % | — | — |
| 2917340035 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 29173401 | 6.5% | Free (18 programs) | — |
| 2917340110 | — | — | ["kg"] |
| 2917340150 | — | — | ["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 2917.34?
Imports of Other esters of orthophthalic acid 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 291734 cover?
This subheading covers "Other esters of orthophthalic acid," which are organic chemical compounds derived from orthophthalic acid (benzene-1,2-dicarboxylic acid) where the carboxyl groups are esterified with various alcohols. This includes a broad range of phthalate esters not specifically provided for in other subheadings under Heading 2917, such as dimethyl phthalate, diethyl phthalate, and dibutyl phthalate, which are classified elsewhere. The WCO Harmonized System Explanatory Notes for Chapter 29 provide guidance on the chemical structure and scope of esters, emphasizing that these are compounds where the hydrogen of an acid group is replaced by an organic radical. Official definitions from the USITC Harmonized Tariff Schedule (HTSUS) and the EU TARIC system confirm this scope, focusing on the chemical identity as an ester of orthophthalic acid, excluding those specifically enumerated in 2917.35 through 2917.39.
What falls outside HS 291734?
The following products are excluded from HS 291734: Dioctyl orthophthalates, which are specifically classified under HS 2917.35. Dinonyl or didecyl orthophthalates are classified under HS 2917.36. Mixed esters of orthophthalic acid containing both dioctyl and dinonyl/didecyl components, or other specific combinations, are typically classified under HS 2917.39 ("Other esters of orthophthalic acid"). Additionally, orthophthalic acid itself (benzene-1,2-dicarboxylic acid) is classified under HS 2917.39. Esters of isophthalic acid (benzene-1,3-dicarboxylic acid) or terephthalic acid (benzene-1,4-dicarboxylic acid) are also excluded, as they are not derivatives of orthophthalic acid and fall under other subheadings within 2917, such as 2917.37 for terephthalic acid and its salts, or 2917.39 for other aromatic polycarboxylic acids and their derivatives.
What are common classification mistakes for HS 291734?
A common error is misclassifying specific phthalate esters that have their own dedicated subheadings, such as dioctyl orthophthalates (2917.35) or dinonyl/didecyl orthophthalates (2917.36), into the residual "Other esters" category of 2917.34. This often occurs due to insufficient attention to the specific chemical name and structure, or a failure to consult the full list of subheadings under Heading 2917. Another mistake involves classifying complex mixtures containing orthophthalic acid esters without applying General Interpretative Rule (GRI) 3(b) if the ester is not the essential character. Importers might also incorrectly classify esters of isophthalic or terephthalic acid under this subheading, overlooking that these are distinct isomers of phthalic acid and are covered elsewhere, often under 2917.37 or 2917.39, depending on the specific derivative.
How should importers classify products under HS 291734?
The correct procedure for classifying products under HS 291734 involves a systematic approach. First, importers and customs brokers must precisely identify the chemical name and structure of the ester to confirm it is indeed an ester of orthophthalic acid. This requires reviewing chemical documentation such as Safety Data Sheets (SDS), Certificates of Analysis, or technical specifications. Next, carefully review all specific subheadings under Heading 2917, particularly 2917.35, 2917.36, and 2917.39, to ensure the product is not more specifically described elsewhere. If the product is an ester of orthophthalic acid but does not fit into the more specific subheadings for dioctyl, dinonyl, or didecyl orthophthalates, then 2917.34 is the appropriate classification. Always refer to the WCO Harmonized System Explanatory Notes and official national tariff schedules (e.g., USITC HTSUS, EU TARIC, UK Trade Tariff) for definitive guidance and any relevant legal notes.
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FAQ
What are the standard Most Favored Nation (MFN) import duty rates for products classified under HS 2917.34, 'Other esters of orthophthalic acid'?
The MFN import duty rates for HS 2917.34 can vary by importing country. For example, the United States applies a rate of 6.5% ad valorem under the Harmonized Tariff Schedule of the United States (HTSUS) for goods from non-preferential countries. The European Union's TARIC database shows a common customs tariff duty of 6.5% ad valorem. The UK Global Tariff also lists a 6.5% ad valorem duty. Importers should consult the specific tariff schedule of the destination country for the most accurate and current MFN rate.
Are there any preferential duty rates available for 'Other esters of orthophthalic acid' (HS 2917.34) under common trade agreements?
Yes, preferential duty rates, including duty-free treatment, are available for HS 2917.34 under various trade agreements. For instance, under the HTSUS, imports from countries party to agreements such as the USMCA (Mexico, Canada), CAFTA-DR (Dominican Republic, El Salvador, Guatemala, Honduras, Nicaragua, Costa Rica), and various Free Trade Agreements (e.g., with Australia, Chile, Colombia, Israel, Korea, Panama, Peru, Singapore) may be eligible for duty-free entry, provided all rules of origin are met. Similarly, the EU and UK have extensive preferential arrangements. Importers must ensure they have valid Certificates of Origin or equivalent documentation to claim these preferential rates.
What are the key classification criteria for determining if a product falls under HS 2917.34, 'Other esters of orthophthalic acid'?
Classification under HS 2917.34 is governed by the chemical structure of the product. This heading specifically covers esters derived from orthophthalic acid (benzene-1,2-dicarboxylic acid) that are not specifically provided for in other subheadings. Key criteria include: 1) The presence of the orthophthalate ester functional group. 2) The product must be a distinct chemical compound. 3) It must not be a cyclic ester of polyhydric alcohols or polycarboxylic acids (which fall under 2917.39). Importers should provide a detailed chemical name, CAS number, and structural formula to customs authorities to ensure accurate classification, referencing the Explanatory Notes to the Harmonized System for guidance.
What documentation is typically required by customs authorities when importing products classified under HS 2917.34?
Standard import documentation includes a commercial invoice, packing list, and bill of lading or air waybill. For chemical products like those under HS 2917.34, additional documentation is often required or recommended. This may include a Material Safety Data Sheet (MSDS) or Safety Data Sheet (SDS) providing chemical identification and safety information, a Certificate of Analysis (CoA) confirming purity and specifications, and potentially a Certificate of Origin if preferential duty rates are being claimed. Importers should also be prepared to provide the chemical name and CAS number upon request by customs.
Are there any specific import restrictions or regulatory requirements for 'Other esters of orthophthalic acid' (HS 2917.34) that importers should be aware of?
While HS 2917.34 itself does not inherently imply specific import restrictions beyond standard customs procedures, certain individual esters of orthophthalic acid may be subject to national chemical control regulations. For example, some phthalates are regulated due to environmental or health concerns (e.g., REACH in the EU, TSCA in the US). Importers must verify if the specific chemical compound they are importing under this heading is listed under any national chemical inventories, requires pre-market notification, or is subject to restrictions on use or concentration in certain products. Consulting with regulatory affairs specialists is advisable to ensure compliance with all applicable environmental, health, and safety regulations in the destination country.