# HS code 2935.40: N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide

> HS code 2935.40 covers N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide. It sits in heading 29.35 (sulphonamides) in chapter 29 (organic chemicals). Other goods of heading 29.35 are classified under 2935.10 (N-Methylperfluorooctane sulphonamide), 2935.20 (N-Ethylperfluorooctane sulphonamide), 2935.30 (N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide), 2935.50 (other perfluorooctane sulphonamides) or 1 other.

Source: https://staging.border.bot/hs-codes/293540
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 29](https://staging.border.bot/hs-codes/29) / [29.35](https://staging.border.bot/hs-codes/2935) / [2935.40](https://staging.border.bot/hs-codes/293540)

## Key facts

- HS code: 2935.40
- Covers: N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide
- Heading: [29.35: Sulphonamides](https://staging.border.bot/hs-codes/2935)
- 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 2935.40 covers N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide.

The legal text of the subheading is “N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide”, in HS2022.

## What it doesn’t cover

Other goods of heading 29.35 are classified under 2935.10 (N-Methylperfluorooctane sulphonamide), 2935.20 (N-Ethylperfluorooctane sulphonamide), 2935.30 (N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide), 2935.50 (other perfluorooctane sulphonamides) or 1 other.

- [2935.10](https://staging.border.bot/hs-codes/293510) N-Methylperfluorooctane sulphonamide
- [2935.20](https://staging.border.bot/hs-codes/293520) N-Ethylperfluorooctane sulphonamide
- [2935.30](https://staging.border.bot/hs-codes/293530) N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide
- [2935.50](https://staging.border.bot/hs-codes/293550) Other perfluorooctane sulphonamides
- [2935.90](https://staging.border.bot/hs-codes/293590) Other

## How it is structured

2935.40 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2935, are heading 29.35; the last two, 40, identify the subheading within the heading.

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

- Chapter 29: Organic chemicals
- Heading 29.35: Sulphonamides
- Subheading 2935.40: N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide

## In other countries

No national tariff lines under 2935.40 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2935.40 at six digits and add their own digits after it.

- Previous subheading: [2935.30](https://staging.border.bot/hs-codes/293530) N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide
- Next subheading: [2935.50](https://staging.border.bot/hs-codes/293550) Other perfluorooctane sulphonamides

## Frequently asked questions

### What does HS code 2935.40 cover?

HS code 2935.40 covers N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide.

### Which heading and chapter is HS code 2935.40 in?

HS code 2935.40 is in heading 29.35 (sulphonamides) in chapter 29 (organic chemicals).

### Where are goods of heading 29.35 classified when 2935.40 doesn’t fit?

Other goods of heading 29.35 are classified under 2935.10 (N-Methylperfluorooctane sulphonamide), 2935.20 (N-Ethylperfluorooctane sulphonamide), 2935.30 (N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide), 2935.50 (other perfluorooctane sulphonamides) or 1 other.

## 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/293540.json