# United States tariff lines under HS 2917.39

> The United States tariff splits HS 2917.39 (aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other) into 8 national lines: 2917.39.04.00 (1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride), 2917.39.08.00 (naphthalic anhydride), 2917.39.12.00 (4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)), 2917.39.15.00 (isophthalic acid) and 4 others. The general (MFN) duty differs by line: 6.5% on 2917.39.04.00, free on 2917.39.08.00, free on 2917.39.12.00, 6.5% on 2917.39.15.00, 6.5% on 2917.39.17.00, 6.5% on 2917.39.20.00, 6.5% on 2917.39.30.00 and 6.5% on 2917.39.70.00.

Source: https://border.bot/countries/united-states/hs-codes/291739
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) / [2917.39](https://border.bot/countries/united-states/hs-codes/291739)

## Key facts

- HS subheading: [2917.39](https://border.bot/hs-codes/291739)
- National lines: 8
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2917.39

The United States tariff splits HS 2917.39 (aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other) into 8 national lines: 2917.39.04.00 (1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride), 2917.39.08.00 (naphthalic anhydride), 2917.39.12.00 (4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)), 2917.39.15.00 (isophthalic acid) and 4 others.

The general (MFN) duty differs by line: 6.5% on 2917.39.04.00, free on 2917.39.08.00, free on 2917.39.12.00, 6.5% on 2917.39.15.00, 6.5% on 2917.39.17.00, 6.5% on 2917.39.20.00, 6.5% on 2917.39.30.00 and 6.5% on 2917.39.70.00.

- [2917.39.04.00](https://border.bot/countries/united-states/hs-codes/2917390400) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, 1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride. Duty (MFN): 6.5%
- [2917.39.08.00](https://border.bot/countries/united-states/hs-codes/2917390800) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Naphthalic anhydride. Duty (MFN): free
- [2917.39.12.00](https://border.bot/countries/united-states/hs-codes/2917391200) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride). Duty (MFN): free
- [2917.39.15.00](https://border.bot/countries/united-states/hs-codes/2917391500) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Isophthalic acid. Duty (MFN): 6.5%
- [2917.39.17.00](https://border.bot/countries/united-states/hs-codes/2917391700) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Tetrabromophthalic anhydride. Duty (MFN): 6.5%
- [2917.39.20.00](https://border.bot/countries/united-states/hs-codes/2917392000) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Other, Plasticizers. Duty (MFN): 6.5%
- [2917.39.30.00](https://border.bot/countries/united-states/hs-codes/2917393000) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Other, Other, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2917.39.70.00](https://border.bot/countries/united-states/hs-codes/2917397000) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Other, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2917.39 yet.

- [The Harmonized System text for 2917.39](https://border.bot/hs-codes/291739)

- Previous subheading: [2917.37](https://border.bot/countries/united-states/hs-codes/291737) Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
- Next subheading: [2918.11](https://border.bot/countries/united-states/hs-codes/291811) Lactic acid, its salts and esters

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2917.39?

The United States tariff splits HS 2917.39 (aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other) into 8 national lines: 2917.39.04.00 (1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride), 2917.39.08.00 (naphthalic anhydride), 2917.39.12.00 (4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)), 2917.39.15.00 (isophthalic acid) and 4 others.

### What is the duty on HS 2917.39 in the United States?

The general (MFN) duty differs by line: 6.5% on 2917.39.04.00, free on 2917.39.08.00, free on 2917.39.12.00, 6.5% on 2917.39.15.00, 6.5% on 2917.39.17.00, 6.5% on 2917.39.20.00, 6.5% on 2917.39.30.00 and 6.5% on 2917.39.70.00.

## 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/291739.json