# United States tariff line 2841.90.50.00: Other > In the United States tariff, line 2841.90.50.00 covers salts of oxometallic or peroxometallic acids. The general (MFN) duty rate is 3.7%. It falls under HS subheading 2841.90 in heading 28.41 (chapter 28). Source: https://border.bot/countries/united-states/hs-codes/2841905000 Last updated: 9 October 2026 [Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2841.90](https://border.bot/countries/united-states/hs-codes/284190) / [2841.90.50.00](https://border.bot/countries/united-states/hs-codes/2841905000) ## Key facts - Tariff line: 2841.90.50.00 - Covers: Salts of oxometallic or peroxometallic acids - Duty (MFN): 3.7% - Preferential rates: From free (18 programmes or origins) - Additional duties: None recorded - Restrictions: None recorded - Tariff: [United States](https://border.bot/countries/united-states) - HS subheading: [2841.90](https://border.bot/hs-codes/284190) ## What this line covers In the United States tariff, line 2841.90.50.00 covers salts of oxometallic or peroxometallic acids. Its legal text is “Other”, read under “Other”. ## How it is structured It falls under HS subheading 2841.90 in heading 28.41 (chapter 28). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff. - Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes - Heading 28.41: Salts of oxometallic or peroxometallic acids - Subheading 2841.90: Other - Line 2841.90.50.00: Other ## Duty The general (MFN) duty rate is 3.7%. Duty-free entry applies to goods that qualify under 17 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: Trade Agreement Between the United States and Japan (JP) - 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 2841.90 yet. - [The Harmonized System text for 2841.90](https://border.bot/hs-codes/284190) ## Other lines under 2841.90 - [2841.90.10.00](https://border.bot/countries/united-states/hs-codes/2841901000) Vanadates - [2841.90.20.00](https://border.bot/countries/united-states/hs-codes/2841902000) Ammonium perrhenate - [2841.90.30.00](https://border.bot/countries/united-states/hs-codes/2841903000) Potassium stannate - [2841.90.40.00](https://border.bot/countries/united-states/hs-codes/2841904000) Aluminates - [2841.90.45.00](https://border.bot/countries/united-states/hs-codes/2841904500) Chromates of zinc or of lead - Previous line: [2841.90.45.00](https://border.bot/countries/united-states/hs-codes/2841904500) Chromates of zinc or of lead - Next line: [2842.10.00.00](https://border.bot/countries/united-states/hs-codes/2842100000) Double or complex silicates, including aluminosilicates whether or not chemically defined ## Frequently asked questions ### What does tariff line 2841.90.50.00 cover in the United States tariff? In the United States tariff, line 2841.90.50.00 covers salts of oxometallic or peroxometallic acids. ### What is the general (MFN) duty on 2841.90.50.00 in the United States? The general (MFN) duty rate is 3.7%. ### Which preferential rates apply to 2841.90.50.00? Duty-free entry applies to goods that qualify under 17 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, Trade Agreement Between the United States and Japan, 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/2841905000.json