# HS code 2917.35: Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, phthalic anhydride

> HS code 2917.35 covers aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, phthalic anhydride. It sits in heading 29.17 (polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives) in chapter 29 (organic chemicals). Other goods of heading 29.17 are classified under 2917.11 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, oxalic acid, its salts and esters), 2917.12 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, adipic acid, its salts and esters), 2917.13 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, azelaic acid, sebacic acid, their salts and esters), 2917.14 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, maleic anhydride) or 8 others.

Source: https://staging.border.bot/hs-codes/291735
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 29](https://staging.border.bot/hs-codes/29) / [29.17](https://staging.border.bot/hs-codes/2917) / [2917.35](https://staging.border.bot/hs-codes/291735)

## Key facts

- HS code: 2917.35
- Covers: Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, phthalic anhydride
- Heading: [29.17: Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives](https://staging.border.bot/hs-codes/2917)
- Chapter: [29: Organic chemicals](https://staging.border.bot/hs-codes/29)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 2917.35 covers aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, phthalic anhydride.

The legal text of the subheading is “Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Phthalic anhydride”, read under “Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives”, in HS2022.

## What it doesn’t cover

Other goods of heading 29.17 are classified under 2917.11 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, oxalic acid, its salts and esters), 2917.12 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, adipic acid, its salts and esters), 2917.13 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, azelaic acid, sebacic acid, their salts and esters), 2917.14 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, maleic anhydride) or 8 others.

- [2917.11](https://staging.border.bot/hs-codes/291711) Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Oxalic acid, its salts and esters
- [2917.12](https://staging.border.bot/hs-codes/291712) Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Adipic acid, its salts and esters
- [2917.13](https://staging.border.bot/hs-codes/291713) Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Azelaic acid, sebacic acid, their salts and esters
- [2917.14](https://staging.border.bot/hs-codes/291714) Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Maleic anhydride
- [2917.19](https://staging.border.bot/hs-codes/291719) Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other
- [2917.20](https://staging.border.bot/hs-codes/291720) Cyclanic, cyclenic or cycloterpenic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives
- [2917.32](https://staging.border.bot/hs-codes/291732) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Dioctyl orthophthalates
- [2917.33](https://staging.border.bot/hs-codes/291733) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Dinonyl or didecyl orthophthalates
- [2917.34](https://staging.border.bot/hs-codes/291734) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other esters of orthophthalic acid
- [2917.36](https://staging.border.bot/hs-codes/291736) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Terephthalic acid and its salts
- [2917.37](https://staging.border.bot/hs-codes/291737) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Dimethyl terephthalate
- [2917.39](https://staging.border.bot/hs-codes/291739) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other

## How it is structured

2917.35 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2917, are heading 29.17; the last two, 35, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 29: Organic chemicals
- Heading 29.17: Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives
- Within the heading: Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives
- Subheading 2917.35: Phthalic anhydride

## In other countries

No national tariff lines under 2917.35 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2917.35 at six digits and add their own digits after it.

- Previous subheading: [2917.34](https://staging.border.bot/hs-codes/291734) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other esters of orthophthalic acid
- Next subheading: [2917.36](https://staging.border.bot/hs-codes/291736) Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Terephthalic acid and its salts

## Frequently asked questions

### What does HS code 2917.35 cover?

HS code 2917.35 covers aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, phthalic anhydride.

### Which heading and chapter is HS code 2917.35 in?

HS code 2917.35 is in heading 29.17 (polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives) in chapter 29 (organic chemicals).

### Where are goods of heading 29.17 classified when 2917.35 doesn’t fit?

Other goods of heading 29.17 are classified under 2917.11 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, oxalic acid, its salts and esters), 2917.12 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, adipic acid, its salts and esters), 2917.13 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, azelaic acid, sebacic acid, their salts and esters), 2917.14 (acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, maleic anhydride) or 8 others.

## Sources and updates

The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.

This page was last updated on 13 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.

Machine-readable: https://staging.border.bot/hs-codes/291735.json