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💾 Data Updated: 2025 HTS Revision 30 • Last updated: November 24, 2025

2909 - Ethers, ether-alcohols, ether-phenols, ether-alcohol- phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulfonated, nitrated or nitrosated derivatives

Sub-classifications

Commodity Code
Description

Overview

HTS Code 2909 encompasses a diverse group of organic compounds characterized by ether linkages, peroxides, acetals, and hemiacetals, along with their modified derivatives. This broad category includes acyclic ethers, which are ethers not containing cyclic structures, and their halogenated, sulfonated, nitrated, or nitrosated forms. It also covers ether-alcohols and their related derivatives, as well as ether-phenols and ether-alcohol-phenols, again considering their chemical modifications. A significant portion of this classification is dedicated to various peroxides, including alcohol peroxides, ether peroxides, acetal peroxides, hemiacetal peroxides, and ketone peroxides, irrespective of whether their chemical structures are precisely defined.

Distinguishing HTS 2909 from its sibling categories at the root level of the HTS database is crucial for accurate classification. While sibling categories under Chapter 01, for instance, deal with live animals, HTS 2909 is firmly within Section VI, Chapter 29, which exclusively covers organic chemicals. This means that the products classified here are synthetic or naturally occurring organic compounds with specific chemical structures, rather than live biological organisms. The scope of 2909 is limited to the specific chemical functionalities described (ethers, peroxides, acetals, hemiacetals) and their derivatives, differentiating it from other organic chemical chapters that may cover alcohols, aldehydes, ketones, or other functional groups in isolation.

Within HTS 2909, further subdivisions are made based on the structural characteristics of the compounds and the presence of ether linkages or peroxide groups. Subcategories like 2909.20.00.00 specifically address cyclanic, cyclenic, or cycloterpenic ethers, indicating a classification based on the ring structure of the ether. Other subdivisions differentiate between acyclic and aromatic ethers, as well as ether-alcohols and ether-phenols, providing more granular control over classification based on the core structure and attached functional groups. The dedicated subcategory for various peroxides highlights their distinct chemical properties and potential applications, warranting separate classification.

Go up to Chapter 29: Organic chemicals

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