# United States tariff line 2931.49.00.10: 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters > In the United States tariff, line 2931.49.00.10 covers non-halogenated organo-phosphorous derivatives, 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters. The general (MFN) duty rate is 3.7%. It falls under HS subheading 2931.49 in heading 29.31 (chapter 29). Source: https://border.bot/countries/united-states/hs-codes/2931490010 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) / [2931.49](https://border.bot/countries/united-states/hs-codes/293149) / [2931.49.00.10](https://border.bot/countries/united-states/hs-codes/2931490010) ## Key facts - Tariff line: 2931.49.00.10 - Covers: Non-halogenated organo-phosphorous derivatives, 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters - Duty (MFN): 3.7% - 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: [2931.49](https://border.bot/hs-codes/293149) ## What this line covers In the United States tariff, line 2931.49.00.10 covers non-halogenated organo-phosphorous derivatives, 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters. Its legal text is “2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters”, read under “Non-halogenated organo-phosphorous derivatives” and “Other”. ## How it is structured It falls under HS subheading 2931.49 in heading 29.31 (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 29.31: Other organo-inorganic compounds - Subheading 2931.49: Non-halogenated organo-phosphorous derivatives - Within the subheading: Other - Line 2931.49.00.10: 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters ## Duty The general (MFN) duty rate is 3.7%. The rate is published on 2931.49.00. 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 2931.49 yet. - [The Harmonized System text for 2931.49](https://border.bot/hs-codes/293149) ## Other lines under 2931.49 - [2931.49.00.05](https://border.bot/countries/united-states/hs-codes/2931490005) O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates - [2931.49.00.08](https://border.bot/countries/united-states/hs-codes/2931490008) [O-2-(Dialkyl (methyl, ethyl, n-propyl or isopropyl) amino)ethyl] hydrogen alkyl (methyl, ethyl, n-propyl or isopropyl) phosphonites and their O-alkyl (≤C10, including cycloalkyl) esters; alkylated or protonated salts thereof - [2931.49.00.15](https://border.bot/countries/united-states/hs-codes/2931490015) Butyl methylphosphinate - [2931.49.00.20](https://border.bot/countries/united-states/hs-codes/2931490020) N-(Phosphonomethyl) glycine (glyphosate) and its salts and esters - [2931.49.00.25](https://border.bot/countries/united-states/hs-codes/2931490025) Bis(1-methylpentyl) methylphosphonate - [2931.49.00.55](https://border.bot/countries/united-states/hs-codes/2931490055) Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms - [2931.49.00.80](https://border.bot/countries/united-states/hs-codes/2931490080) Other - Previous line: [2931.49.00.08](https://border.bot/countries/united-states/hs-codes/2931490008) [O-2-(Dialkyl (methyl, ethyl, n-propyl or isopropyl) amino)ethyl] hydrogen alkyl (methyl, ethyl, n-propyl or isopropyl) phosphonites and their O-alkyl (≤C10, including cycloalkyl) esters; alkylated or protonated salts thereof - Next line: [2931.49.00.15](https://border.bot/countries/united-states/hs-codes/2931490015) Butyl methylphosphinate ## Frequently asked questions ### What does tariff line 2931.49.00.10 cover in the United States tariff? In the United States tariff, line 2931.49.00.10 covers non-halogenated organo-phosphorous derivatives, 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters. ### What is the general (MFN) duty on 2931.49.00.10 in the United States? The general (MFN) duty rate is 3.7%. The rate is published on 2931.49.00. ### Which preferential rates apply to 2931.49.00.10? 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/2931490010.json