# United States tariff lines under HS 2931.49

> The United States tariff splits HS 2931.49 (non-halogenated organo-phosphorous derivatives: Other) into 8 national lines: 2931.49.00.05 (O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates), 2931.49.00.08 ([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), 2931.49.00.10 (2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters), 2931.49.00.15 (butyl methylphosphinate) and 4 others. The general (MFN) duty is 3.7% on all 8 lines.

Source: https://border.bot/countries/united-states/hs-codes/293149
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)

## Key facts

- HS subheading: [2931.49](https://border.bot/hs-codes/293149)
- Duty (MFN): 3.7%
- National lines: 8
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2931.49

The United States tariff splits HS 2931.49 (non-halogenated organo-phosphorous derivatives: Other) into 8 national lines: 2931.49.00.05 (O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates), 2931.49.00.08 ([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), 2931.49.00.10 (2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters), 2931.49.00.15 (butyl methylphosphinate) and 4 others.

The general (MFN) duty is 3.7% on all 8 lines.

- [2931.49.00.05](https://border.bot/countries/united-states/hs-codes/2931490005) Non-halogenated organo-phosphorous derivatives, Other, O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates. Duty (MFN): 3.7%
- [2931.49.00.08](https://border.bot/countries/united-states/hs-codes/2931490008) Non-halogenated organo-phosphorous derivatives, Other, [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. Duty (MFN): 3.7%
- [2931.49.00.10](https://border.bot/countries/united-states/hs-codes/2931490010) Non-halogenated organo-phosphorous derivatives, Other, 2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters. Duty (MFN): 3.7%
- [2931.49.00.15](https://border.bot/countries/united-states/hs-codes/2931490015) Non-halogenated organo-phosphorous derivatives, Other, Butyl methylphosphinate. Duty (MFN): 3.7%
- [2931.49.00.20](https://border.bot/countries/united-states/hs-codes/2931490020) Non-halogenated organo-phosphorous derivatives, Other, N-(Phosphonomethyl) glycine (glyphosate) and its salts and esters. Duty (MFN): 3.7%
- [2931.49.00.25](https://border.bot/countries/united-states/hs-codes/2931490025) Non-halogenated organo-phosphorous derivatives, Other, Bis(1-methylpentyl) methylphosphonate. Duty (MFN): 3.7%
- [2931.49.00.55](https://border.bot/countries/united-states/hs-codes/2931490055) Non-halogenated organo-phosphorous derivatives, Other, Other, Containing a phosphorus atom to which one methyl, ethyl, n-propyl or isopropyl group is bonded but no further carbon atoms. Duty (MFN): 3.7%
- [2931.49.00.80](https://border.bot/countries/united-states/hs-codes/2931490080) Non-halogenated organo-phosphorous derivatives, Other, Other, Other. Duty (MFN): 3.7%

## 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)

- Previous subheading: [2931.48](https://border.bot/countries/united-states/hs-codes/293148) Other organo-inorganic compounds
- Next subheading: [2931.51](https://border.bot/countries/united-states/hs-codes/293151) Other organo-inorganic compounds

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2931.49?

The United States tariff splits HS 2931.49 (non-halogenated organo-phosphorous derivatives: Other) into 8 national lines: 2931.49.00.05 (O-Alkyl (≤C10, including cycloalkyl) N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidocyanidates), 2931.49.00.08 ([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), 2931.49.00.10 (2-Amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) and its salts and esters), 2931.49.00.15 (butyl methylphosphinate) and 4 others.

### What is the duty on HS 2931.49 in the United States?

The general (MFN) duty is 3.7% on all 8 lines.

## 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/293149.json