# United States tariff line 2917.39.08.00: Naphthalic anhydride

> In the United States tariff, line 2917.39.08.00 covers aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, naphthalic anhydride. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2917.39 in heading 29.17 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2917390800
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) / [2917.39.08.00](https://border.bot/countries/united-states/hs-codes/2917390800)

## Key facts

- Tariff line: 2917.39.08.00
- Covers: Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, naphthalic anhydride
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2917.39](https://border.bot/hs-codes/291739)

## What this line covers

In the United States tariff, line 2917.39.08.00 covers aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, naphthalic anhydride.

Its legal text is “Naphthalic anhydride”, read under “Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives” and “Other”.

## How it is structured

It falls under HS subheading 2917.39 in heading 29.17 (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 29.17: Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
- Subheading 2917.39: Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives
- Within the subheading: Other
- Line 2917.39.08.00: Naphthalic anhydride

## Duty

Goods under this line enter free of general (MFN) duty.

## 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)

## Other lines under 2917.39

- [2917.39.04.00](https://border.bot/countries/united-states/hs-codes/2917390400) 1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride
- [2917.39.12.00](https://border.bot/countries/united-states/hs-codes/2917391200) 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)
- [2917.39.15.00](https://border.bot/countries/united-states/hs-codes/2917391500) Isophthalic acid
- [2917.39.17.00](https://border.bot/countries/united-states/hs-codes/2917391700) Tetrabromophthalic anhydride
- [2917.39.20.00](https://border.bot/countries/united-states/hs-codes/2917392000) Plasticizers
- [2917.39.30.00](https://border.bot/countries/united-states/hs-codes/2917393000) Products described in additional U.S. note 3 to section VI
- [2917.39.70.00](https://border.bot/countries/united-states/hs-codes/2917397000) Other

- Previous line: [2917.39.04.00](https://border.bot/countries/united-states/hs-codes/2917390400) 1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride
- Next line: [2917.39.12.00](https://border.bot/countries/united-states/hs-codes/2917391200) 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)

## Frequently asked questions

### What does tariff line 2917.39.08.00 cover in the United States tariff?

In the United States tariff, line 2917.39.08.00 covers aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, naphthalic anhydride.

### What is the general (MFN) duty on 2917.39.08.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## 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/2917390800.json