HS Code 29.16 – Acids; unsaturated acyclic monocarboxylic, cyclic monocarboxylic, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives

HS code 2916 is a 4-digit heading in the Harmonized System that covers: Acids; unsaturated acyclic monocarboxylic, cyclic monocarboxylic, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. Heading 2916 encompasses a vital category of organic chemicals: unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, and their extensive range of derivatives including anhydrides, halides, peroxides, and peroxyacids. This classification also extends to their halogenated, sulphonated, nitrated, or nitrosated derivatives. Products under this heading are characterized by having a single carboxyl group (-COOH) and either an unsaturated carbon chain (like acrylic acid) or a cyclic structure (like benzoic acid). This heading is critical for trade compliance as these compounds serve as fundamental building blocks across numerous industries, from the production of polymers, plastics, and resins to pharmaceuticals, food additives, and fragrances. Understanding the precise scope and boundaries is essential; for instance, it differentiates these monocarboxylic acids from polycarboxylic acids (2917) or saturated monocarboxylic acids (2915). Historically, the trade of these chemicals has been significant, fueling the growth of modern chemical industries. Their classification under Chapter 29, Section VI (Products of the Chemical or Allied Industries), highlights their role as distinct organic compounds, requiring careful scrutiny for safety, environmental, and end-use regulations.

Acrylic acid, methacrylic acid, oleic acid, linoleic acid, benzoic acid, cinnamic acid, sorbic acid, undecylenic acid, crotonic acid, isostearic acid, pivalic acid, toluic acid, naphthoic acid, cyclopropane carboxylic acid, cyclohexanecarboxylic acid, acryloyl chloride, benzoyl chloride, peroxyacetic acid, sodium benzoate, methyl acrylate, ethyl acrylate, potassium sorbate, calcium propionate, vinyl acetate monomer (VAM), methyl methacrylate (MMA)

Common misclassification errors under HS 2916 often arise from confusing monocarboxylic acids with other organic acids. Traders frequently confuse them with HS 2915 (Saturated acyclic monocarboxylic acids), where the distinction lies in the presence of unsaturation or a cyclic structure. Another common error is misclassifying them under HS 2917 (Polycarboxylic acids), overlooking the 'mono' carboxylic nature of 2916. For example, a dicarboxylic acid like maleic acid (2917) might be incorrectly placed here. Lastly, some derivatives might be mistaken for their corresponding esters (e.g., specific esters of acrylic acid might be confused with other ester headings if not correctly identified as a derivative of the acid in 2916).

In 2025, the top exporters of HS code 2916 in UN Comtrade data were China ($2.2B, 26% of world exports), Germany ($956M) and the United States ($780M). World exports came to about $8.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 2916 in UN Comtrade data were India ($866M, 9.1% of world imports), the United States ($864M) and Germany ($650M). World imports came to about $9.5B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 2916 is a 4-digit heading under Chapter 29 of the Harmonized System. The first 2 digits (29) identify the chapter, and digits 3-4 (16) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.