HS 292122 Hexamethylenediamine and its salts
Quick Answer: HS code 292122 covers hexamethylenediamine and its salts, which are organic chemical compounds primarily used as monomers in the production of nylon 6,6 and other polyamides, as well as in epoxy resins and crosslinking agents. Importers and exporters should note varying duty rates across major jurisdictions. The UK applies a 6.00% ad valorem duty. The EU TARIC system shows a 6.50% ad valorem rate. In the US, the general most-favored-nation (MFN) rate is 6.5% ad valorem, but significant preferential duty programs offer duty-free entry for eligible goods from numerous countries, including Australia, Korea, and Singapore, under specific free trade agreements. Additionally, some US tariff lines under this code may have a compound duty, such as 15.4¢/kg + 46%, depending on the specific product and origin. Accurate classification and origin determination are crucial for optimizing duty costs.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2921220000 | 6.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2921220000 | 6.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2921220500 | 6.5% | Free (17 programs) | ["kg"] |
| 2921225000 | 6.5% | Free (17 programs) | ["kg"] |
| 292122 | — | — | — |
| 2921221000 | 6.5% | Free (17 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 2921.22?
Imports of Hexamethylenediamine and its salts 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 292122 cover?
This subheading covers hexamethylenediamine and its salts, as defined by the Harmonized System Nomenclature, specifically within Chapter 29, which encompasses organic chemicals. Hexamethylenediamine (also known as 1,6-diaminohexane) is a diamine with the chemical formula H₂N(CH₂)₆NH₂. It is a crucial intermediate in the production of nylon 6,6 and other polyamides. The scope extends to both the free base form of hexamethylenediamine and its various salts, such as hexamethylenediamine adipate or hexamethylenediamine dihydrochloride, provided they retain the essential chemical identity of hexamethylenediamine. Official interpretations from the USITC Harmonized Tariff Schedule (HTS) and the EU TARIC system consistently align with this WCO definition, focusing on the specific chemical structure and function of this organic compound.
What falls outside HS 292122?
The following products are excluded from HS 292122: hexamethylenediamine when it has been further processed into polymers, such as nylon 6,6, which would typically be classified in Chapter 39 as plastics and articles thereof. Additionally, other diamines that are not hexamethylenediamine, such as ethylenediamine (HS 2921.21) or other acyclic polyamines, are specifically excluded as they possess different chemical structures and are enumerated elsewhere within Heading 2921 or other relevant subheadings. Mixtures where hexamethylenediamine is not the predominant component, or where it is merely a minor ingredient in a formulated product, might also fall outside this specific subheading, depending on the nature and function of the overall mixture, potentially leading to classification under other organic chemical headings or even prepared chemical products.
What are common classification mistakes for HS 292122?
A common error is misclassifying hexamethylenediamine derivatives or polymers as the pure substance or its salts. For instance, nylon 6,6 salt, which is a specific salt formed from hexamethylenediamine and adipic acid, is sometimes incorrectly placed here when it should be classified under Heading 3908 as a polyamide, specifically within the scope of plastics. Another frequent mistake involves confusing hexamethylenediamine with other acyclic diamines or polyamines, leading to incorrect application of General Rule of Interpretation (GRI) 1, which dictates classification according to the terms of the headings and any relative section or chapter notes. Importers must ensure the chemical identity precisely matches "hexamethylenediamine" or its direct salts, rather than related but distinct chemical compounds or downstream products.
How should importers classify products under HS 292122?
The correct procedure for classifying products under HS 292122 involves a meticulous review of the chemical composition and identity of the imported substance. Importers and customs brokers should first verify that the product is unequivocally hexamethylenediamine or one of its direct salts, using chemical analysis reports, Safety Data Sheets (SDS), and Certificates of Analysis (CoA). It is crucial to confirm that the product has not undergone polymerization or significant chemical transformation beyond salt formation. Application of General Rule of Interpretation (GRI) 1 is paramount, ensuring the product precisely matches the textual description of subheading 292122. In cases of doubt, seeking a binding ruling from the relevant customs authority (e.g., CBP in the US, HMRC in the UK, or national customs authorities in the EU) is highly recommended to ensure compliance and avoid potential penalties or delays.
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FAQ
What are the typical Most Favored Nation (MFN) duty rates for Hexamethylenediamine and its salts (HS 2921.22) in major markets?
The MFN (Most Favored Nation) duty rates for Hexamethylenediamine and its salts (HS 2921.22) vary by importing country. For example, the United States generally applies a 6.5% ad valorem duty rate under the Harmonized Tariff Schedule of the United States (HTSUS). The European Union's TARIC database indicates a common customs tariff of 6.5% ad valorem. The UK Global Tariff also lists a 6.5% ad valorem rate. Importers should always verify the current rates with the official customs tariff of the destination country, such as the USITC Tariff Database, EU TARIC, or the UK Trade Tariff.
Which preferential trade agreements offer duty-free treatment for HS 2921.22, 'Hexamethylenediamine and its salts'?
Many preferential trade agreements provide duty-free access for Hexamethylenediamine and its salts (HS 2921.22) when originating from eligible partner countries. In the United States, for instance, duty-free treatment (indicated by 'Free' or a specific program indicator) is available under agreements such as the Australia Free Trade Agreement (AU), Bahrain Free Trade Agreement (BH), Chile Free Trade Agreement (CL), Colombia Trade Promotion 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 (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. Importers must ensure compliance with the specific Rules of Origin for the respective agreement to qualify for preferential duty treatment. Consult the relevant Free Trade Agreement text and customs regulations for detailed requirements.
What are the key classification criteria for distinguishing 'Hexamethylenediamine and its salts' (HS 2921.22) from other amines?
The primary classification criterion for HS 2921.22 is the specific chemical structure: Hexamethylenediamine (1,6-diaminohexane) and its corresponding salts. This subheading falls under Chapter 29, which covers organic chemicals, and specifically under subheading 2921 for 'Amine-function compounds.' The 'acyclic polyamines' group (2921.2) further refines the classification. It is crucial that the product is precisely Hexamethylenediamine or one of its salts, and not another diamine or polyamine. Laboratory analysis (e.g., GC-MS, NMR) and detailed chemical specifications (CAS number, purity, molecular formula) are often required to confirm the identity and ensure correct classification, especially when distinguishing from isomers or mixtures.
Are there any specific documentation requirements or regulatory considerations for importing Hexamethylenediamine and its salts (HS 2921.22)?
Beyond standard customs documentation (commercial invoice, packing list, bill of lading/air waybill, and origin declaration), importers of Hexamethylenediamine and its salts (HS 2921.22) should be aware of potential chemical-specific regulations. Depending on the country, this substance may be subject to chemical control laws (e.g., TSCA in the US, REACH in the EU, K-REACH in Korea) that require pre-market notification, registration, or specific labeling (e.g., Safety Data Sheets – SDS). While generally not a controlled substance for narcotics purposes, its industrial use may necessitate compliance with environmental or occupational safety regulations. Importers should consult their customs broker and relevant national chemical regulatory authorities to ensure full compliance before importation.