# HS heading 29.16: Unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives > HS heading 29.16 covers unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. It is in chapter 29 (organic chemicals). It is split into 12 subheadings: 2916.11 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, acrylic acid and its salts), 2916.12 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, esters of acrylic acid), 2916.13 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, methacrylic acid and its salts), 2916.14 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, esters of methacrylic acid), 2916.15 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, oleic, linoleic or linolenic acids, their salts and esters), 2916.16 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, binapacryl (ISO)) and 6 others. National tariff lines under heading 29.16 are live on border.bot for the United States (45 lines, also used by 1 other country). Source: https://border.bot/hs-codes/2916 Last updated: 11 October 2026 [HS codes](https://border.bot/hs-codes) / [Chapter 29](https://border.bot/hs-codes/29) / [29.16](https://border.bot/hs-codes/2916) ## Key facts - Heading: 29.16 - Description: Unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - Chapter: 29: Organic chemicals - Subheadings: 12 - Edition: HS2022 ## What this code covers HS heading 29.16 covers unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. It is split into 12 subheadings: 2916.11 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, acrylic acid and its salts), 2916.12 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, esters of acrylic acid), 2916.13 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, methacrylic acid and its salts), 2916.14 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, esters of methacrylic acid), 2916.15 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, oleic, linoleic or linolenic acids, their salts and esters), 2916.16 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, binapacryl (ISO)) and 6 others. - [2916.11](https://border.bot/hs-codes/291611) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Acrylic acid and its salts - [2916.12](https://border.bot/hs-codes/291612) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Esters of acrylic acid - [2916.13](https://border.bot/hs-codes/291613) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Methacrylic acid and its salts - [2916.14](https://border.bot/hs-codes/291614) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Esters of methacrylic acid - [2916.15](https://border.bot/hs-codes/291615) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Oleic, linoleic or linolenic acids, their salts and esters - [2916.16](https://border.bot/hs-codes/291616) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Binapacryl (ISO) - [2916.19](https://border.bot/hs-codes/291619) Unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other - [2916.20](https://border.bot/hs-codes/291620) Cyclanic, cyclenic or cycloterpenic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives - [2916.31](https://border.bot/hs-codes/291631) Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Benzoic acid, its salts and esters - [2916.32](https://border.bot/hs-codes/291632) Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Benzoyl peroxide and benzoyl chloride - [2916.34](https://border.bot/hs-codes/291634) Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Phenylacetic acid and its salts - [2916.39](https://border.bot/hs-codes/291639) Aromatic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Other ## What it doesn’t cover Other goods of chapter 29 are classified in its other 41 headings, listed below. - [29.01](https://border.bot/hs-codes/2901) Acyclic hydrocarbons - [29.02](https://border.bot/hs-codes/2902) Cyclic hydrocarbons - [29.03](https://border.bot/hs-codes/2903) Halogenated derivatives of hydrocarbons - [29.04](https://border.bot/hs-codes/2904) Sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated - [29.05](https://border.bot/hs-codes/2905) Acyclic alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.06](https://border.bot/hs-codes/2906) Cyclic alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.07](https://border.bot/hs-codes/2907) Phenols; phenol-alcohols - [29.08](https://border.bot/hs-codes/2908) Halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols - [29.09](https://border.bot/hs-codes/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, sulphonated, nitrated or nitrosated derivatives - [29.10](https://border.bot/hs-codes/2910) Epoxides, epoxyalcohols, epoxyphenols and epoxyethers, with a three-membered ring, and their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.11](https://border.bot/hs-codes/2911) Acetals and hemiacetals, whether or not with other oxygen function, and their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.12](https://border.bot/hs-codes/2912) Aldehydes, whether or not with other oxygen function; cyclic polymers of aldehydes; paraformaldehyde - [29.13](https://border.bot/hs-codes/2913) Halogenated, sulphonated, nitrated or nitrosated derivatives of products of heading 29.12 - [29.14](https://border.bot/hs-codes/2914) Ketones and quinones, whether or not with other oxygen function, and their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.15](https://border.bot/hs-codes/2915) Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.17](https://border.bot/hs-codes/2917) Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.18](https://border.bot/hs-codes/2918) Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.19](https://border.bot/hs-codes/2919) Phosphoric esters and their salts, including lactophosphates; their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.20](https://border.bot/hs-codes/2920) Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and their salts; their halogenated, sulphonated, nitrated or nitrosated derivatives - [29.21](https://border.bot/hs-codes/2921) Amine-function compounds - [29.22](https://border.bot/hs-codes/2922) Oxygen-function amino-compounds - [29.23](https://border.bot/hs-codes/2923) Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined - [29.24](https://border.bot/hs-codes/2924) Carboxyamide-function compounds; amide-function compounds of carbonic acid - [29.25](https://border.bot/hs-codes/2925) Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds - [29.26](https://border.bot/hs-codes/2926) Nitrile-function compounds - [29.27](https://border.bot/hs-codes/2927) Diazo-, azo- or azoxy-compounds - [29.28](https://border.bot/hs-codes/2928) Organic derivatives of hydrazine or of hydroxylamine - [29.29](https://border.bot/hs-codes/2929) Compounds with other nitrogen function - [29.30](https://border.bot/hs-codes/2930) Organo-sulphur compounds - [29.31](https://border.bot/hs-codes/2931) Other organo-inorganic compounds - [29.32](https://border.bot/hs-codes/2932) Heterocyclic compounds with oxygen hetero-atom(s) only - [29.33](https://border.bot/hs-codes/2933) Heterocyclic compounds with nitrogen hetero-atom(s) only - [29.34](https://border.bot/hs-codes/2934) Nucleic acids and their salts, whether or not chemically defined; other heterocyclic compounds - [29.35](https://border.bot/hs-codes/2935) Sulphonamides - [29.36](https://border.bot/hs-codes/2936) Provitamins and vitamins, natural or reproduced by synthesis (including natural concentrates), derivatives thereof used primarily as vitamins, and intermixtures of the foregoing, whether or not in any solvent - [29.37](https://border.bot/hs-codes/2937) Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones - [29.38](https://border.bot/hs-codes/2938) Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives - [29.39](https://border.bot/hs-codes/2939) Alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives - [29.40](https://border.bot/hs-codes/2940) Sugars, chemically pure, other than sucrose, lactose, maltose, glucose and fructose; sugar ethers, sugar acetals and sugar esters, and their salts, other than products of heading 2937, 2938 or 2939 - [29.41](https://border.bot/hs-codes/2941) Antibiotics - [29.42](https://border.bot/hs-codes/2942) Other organic compounds ## How it is structured Heading 29.16 is one of 42 headings in chapter 29. Its first two digits, 29, are the chapter; the next two, 16, number the heading within it. Its subheadings add two more digits (2916.11, 2916.12, 2916.13). ## In other countries National tariff lines under heading 29.16 are live on border.bot for the United States (45 lines, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/29): 45 lines, used by 1 other country - Previous heading: [29.15](https://border.bot/hs-codes/2915) Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives - Next heading: [29.17](https://border.bot/hs-codes/2917) Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives ## Frequently asked questions ### What does HS heading 29.16 cover? HS heading 29.16 covers unsaturated acyclic monocarboxylic acids, cyclic monocarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. ### Which chapter is HS heading 29.16 in? HS heading 29.16 is in chapter 29 (organic chemicals). ### How many subheadings does HS heading 29.16 have? HS heading 29.16 has 12 subheadings: 2916.11 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, acrylic acid and its salts), 2916.12 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, esters of acrylic acid), 2916.13 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, methacrylic acid and its salts), 2916.14 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, esters of methacrylic acid), 2916.15 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, oleic, linoleic or linolenic acids, their salts and esters), 2916.16 (unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives, binapacryl (ISO)) and 6 others. ### Which countries’ tariffs list national lines under HS heading 29.16? National tariff lines under heading 29.16 are live on border.bot for the United States (45 lines, also used by 1 other country). ## Sources and updates The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026. This page was last updated on 11 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://border.bot/hs-codes/2916.json