# 290123 — Acyclic hydrocarbons: Butene (butylene) and isomers thereof

HS code 290123 classifies Acyclic hydrocarbons: Butene (butylene) and isomers thereof. It belongs to Chapter 29 (Organic chemicals) of Section VI (Products of the chemical or allied industries) of the Harmonized System. Duty rates are recorded for 1 country.

> Section VI · Products of the chemical or allied industries
> Chapter 29 · Organic chemicals

**HS code:** `290123`

## Description

Acyclic hydrocarbons : Unsaturated : Butene (butylene) and isomers thereof

## Duty rates

| Country | Rate | Programme |
| --- | --- | --- |
| US United States | 0% | MFN |

Rates effective as of 2026-01-01.

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Source: https://hscode.eximagent.ai/29/290123
Last updated: 2026-06-03
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