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

2912 - Aldehydes, whether or not with other oxygen function; cyclic polymers of aldehydes; paraformaldehyde:

Sub-classifications

Commodity Code
Description

Overview

Chapter 29 of the Harmonized Tariff Schedule (HTS) encompasses a broad range of organic chemicals, and heading 2912 specifically identifies aldehydes, whether or not they possess other oxygen-containing functional groups. This category includes a diverse array of compounds characterized by the presence of the aldehyde functional group (-CHO). It also extends to cyclic polymers of aldehydes, which are formed when multiple aldehyde molecules link together to create ring structures, and paraformaldehyde, a solid polymer of formaldehyde.

When classifying goods within HTS Section VI, particularly Chapter 29, it is crucial to distinguish between different chemical families based on their defining functional groups. Heading 2912 stands apart from other headings in Chapter 29 that cover alcohols (2905), phenols (2907), carboxylic acids (2915), and other oxygen-function organic compounds. The defining characteristic here is the aldehyde group, which dictates reactivity and chemical properties distinct from these other classes.

The subcategories within 2912 provide a further breakdown based on the structure and type of aldehyde. These subdivisions account for acyclic aldehydes (those with an open carbon chain), cyclic aldehydes (where the aldehyde group is part of a ring structure), and aldehydes combined with other oxygen functions such as alcohols, ethers, or phenols. The explicit inclusions of cyclic polymers of aldehydes and paraformaldehyde as distinct subcategories ensure their accurate classification, reflecting their polymeric nature or specific industrial uses.

Go up to Chapter 29: Organic chemicals

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