# United States tariff line 2924.21.50.00: Other > In the United States tariff, line 2924.21.50.00 covers cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof. The general (MFN) duty rate is 6.5%. It falls under HS subheading 2924.21 in heading 29.24 (chapter 29). Source: https://border.bot/countries/united-states/hs-codes/2924215000 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) / [2924.21](https://border.bot/countries/united-states/hs-codes/292421) / [2924.21.50.00](https://border.bot/countries/united-states/hs-codes/2924215000) ## Key facts - Tariff line: 2924.21.50.00 - Covers: Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof - 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: [2924.21](https://border.bot/hs-codes/292421) ## What this line covers In the United States tariff, line 2924.21.50.00 covers cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof. Its legal text is “Other”, read under “Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof” and “Ureines and their derivatives; salts thereof”. ## How it is structured It falls under HS subheading 2924.21 in heading 29.24 (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 29.24: Carboxyamide-function compounds; amide-function compounds of carbonic acid - Subheading 2924.21: Cyclic amides (including cyclic carbamates) and their derivatives; salts thereof - Within the subheading: Ureines and their derivatives; salts thereof - Line 2924.21.50.00: Other ## Duty The general (MFN) duty rate is 6.5%. 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 2924.21 yet. - [The Harmonized System text for 2924.21](https://border.bot/hs-codes/292421) ## Other lines under 2924.21 - [2924.21.04.00](https://border.bot/countries/united-states/hs-codes/2924210400) 3-(p-Chlorophenyl)-1,1-dimethylurea (Monuron) - [2924.21.08.00](https://border.bot/countries/united-states/hs-codes/2924210800) 1,1-Dimethyl-3-(α,α,α-trifluoro-m- tolyl)urea (Fluometuron) - [2924.21.12.00](https://border.bot/countries/united-states/hs-codes/2924211200) 1-(2-Methylcyclohexyl)-3-phenylurea - [2924.21.16.00](https://border.bot/countries/united-states/hs-codes/2924211600) Other - [2924.21.18.00](https://border.bot/countries/united-states/hs-codes/2924211800) sym-Diethyldiphenylurea - [2924.21.20.00](https://border.bot/countries/united-states/hs-codes/2924212000) Products described in additional U.S. note 3 to section VI - [2924.21.45.00](https://border.bot/countries/united-states/hs-codes/2924214500) Other - Previous line: [2924.21.45.00](https://border.bot/countries/united-states/hs-codes/2924214500) Other - Next line: [2924.23.10.00](https://border.bot/countries/united-states/hs-codes/2924231000) 2-Acetamidobenzoic acid ## Frequently asked questions ### What does tariff line 2924.21.50.00 cover in the United States tariff? In the United States tariff, line 2924.21.50.00 covers cyclic amides (including cyclic carbamates) and their derivatives; salts thereof, ureines and their derivatives; salts thereof. ### What is the general (MFN) duty on 2924.21.50.00 in the United States? The general (MFN) duty rate is 6.5%. ### Which preferential rates apply to 2924.21.50.00? 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/2924215000.json