# United States tariff line 2921.29.00.10: Tetraethylene pentamine > In the United States tariff, line 2921.29.00.10 covers acyclic polyamines and their derivatives; salts thereof, tetraethylene pentamine. The general (MFN) duty rate is 6.5%. It falls under HS subheading 2921.29 in heading 29.21 (chapter 29). Source: https://border.bot/countries/united-states/hs-codes/2921290010 Last updated: 9 October 2026 [Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2921.29](https://border.bot/countries/united-states/hs-codes/292129) / [2921.29.00.10](https://border.bot/countries/united-states/hs-codes/2921290010) ## Key facts - Tariff line: 2921.29.00.10 - Covers: Acyclic polyamines and their derivatives; salts thereof, tetraethylene pentamine - Duty (MFN): 6.5% - Preferential rates: From free (17 programmes or origins) - Additional duties: None recorded - Restrictions: None recorded - Tariff: [United States](https://border.bot/countries/united-states) - HS subheading: [2921.29](https://border.bot/hs-codes/292129) ## What this line covers In the United States tariff, line 2921.29.00.10 covers acyclic polyamines and their derivatives; salts thereof, tetraethylene pentamine. Its legal text is “Tetraethylene pentamine”, read under “Acyclic polyamines and their derivatives; salts thereof” and “Other”. Products commonly classified here include N,N'-Bis(3-aminopropyl)ethylenediamine (CAS No. 10563-26-5), 2,4,4-Trimethyl-1,6-hexanediamine (CAS No. 25620-58-0) and N,N-Diethyl-1,3-propanediamine (CAS No. 104-78-9) (border.bot’s search keywords, not legal text). ## How it is structured It falls under HS subheading 2921.29 in heading 29.21 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff. - Chapter 29: Organic chemicals - Heading 29.21: Amine-function compounds - Subheading 2921.29: Acyclic polyamines and their derivatives; salts thereof - Within the subheading: Other - Line 2921.29.00.10: Tetraethylene pentamine ## Duty The general (MFN) duty rate is 6.5%. The rate is published on 2921.29.00. Duty-free entry applies to goods that qualify under 16 programmes, and to goods from a group of origins (origin group A). - Free: a group of origins (origin group A) (A) - Free: United States-Australia Free Trade Agreement (AU) - Free: United States-Bahrain Free Trade Agreement Implementation Act (BH) - Free: United States-Chile Free Trade Agreement (CL) - Free: United States-Colombia Trade Promotion Agreement Implementation Act (CO) - Free: African Growth and Opportunity Act (D) - Free: Caribbean Basin Economic Recovery Act (E) - Free: United States-Israel Free Trade Area (IL) - Free: United States-Jordan Free Trade Area Implementation Act (JO) - Free: United States-Korea Free Trade Agreement Implementation Act (KR) - Free: United States-Morocco Free Trade Agreement Implementation Act (MA) - Free: United States-Oman Free Trade Agreement Implementation Act (OM) - Free: Dominican Republic-Central America-United States Free Trade Agreement (P) - Free: United States-Panama Trade Promotion Agreement Implementation Act (PA) - Free: United States-Peru Trade Promotion Agreement Implementation Act (PE) - Free: United States-Mexico-Canada Agreement (S) - Free: United States-Singapore Free Trade Agreement (SG) ## In other countries No other national tariff on border.bot has live lines under 2921.29 yet. - [The Harmonized System text for 2921.29](https://border.bot/hs-codes/292129) ## Other lines under 2921.29 - [2921.29.00.20](https://border.bot/countries/united-states/hs-codes/2921290020) Triethylenetetramine - [2921.29.00.30](https://border.bot/countries/united-states/hs-codes/2921290030) Diethylenetriamine - [2921.29.00.55](https://border.bot/countries/united-states/hs-codes/2921290055) Other - Previous line: [2921.22.50.00](https://border.bot/countries/united-states/hs-codes/2921225000) Other - Next line: [2921.29.00.20](https://border.bot/countries/united-states/hs-codes/2921290020) Triethylenetetramine ## Frequently asked questions ### What does tariff line 2921.29.00.10 cover in the United States tariff? In the United States tariff, line 2921.29.00.10 covers acyclic polyamines and their derivatives; salts thereof, tetraethylene pentamine. ### What is the general (MFN) duty on 2921.29.00.10 in the United States? The general (MFN) duty rate is 6.5%. The rate is published on 2921.29.00. ### Which preferential rates apply to 2921.29.00.10? Duty-free entry applies to goods that qualify under 16 programmes: the United States-Australia Free Trade Agreement, the United States-Bahrain Free Trade Agreement Implementation Act, the United States-Chile Free Trade Agreement, the United States-Colombia Trade Promotion Agreement Implementation Act, African Growth and Opportunity Act, Caribbean Basin Economic Recovery Act, the United States-Israel Free Trade Area, the United States-Jordan Free Trade Area Implementation Act, the United States-Korea Free Trade Agreement Implementation Act, the United States-Morocco Free Trade Agreement Implementation Act, the United States-Oman Free Trade Agreement Implementation Act, the Dominican Republic-Central America-United States Free Trade Agreement, the United States-Panama Trade Promotion Agreement Implementation Act, the United States-Peru Trade Promotion Agreement Implementation Act, the United States-Mexico-Canada Agreement and the United States-Singapore Free Trade Agreement, and to goods from a group of origins (origin group A). ## Sources and updates The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026. This page was last updated on 9 October 2026. Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling. Official source files: - https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false Machine-readable: https://border.bot/countries/united-states/hs-codes/2921290010.json