Sulphonamides

In plain English

This heading covers sulphonamides, which are divided into specific groups based on their chemical structure. Some subheadings list particular compounds such as N-methylperfluorooctane sulphonamide, N-ethylperfluorooctane sulphonamide, and two variations involving hydroxyethyl and methyl groups. Other subheadings account for remaining perfluorooctane sulphonamides that do not fit the specific descriptions, as well as sulphonamides not elsewhere classified in this heading.

PARAPHRASE OF THE OFFICIAL HS 2022 TEXTS BELOW — NOT LEGAL ADVICE

6-digit subheadings (6)

Official HS 2022 subheading texts. National tariff schedules subdivide these further (8-10 digit lines) and set the actual duty rates.

Chapter 29 classification notes

Classification certainty

The 6-digit level shown here is the internationally harmonised layer. Duty rates attach to national 8-10 digit tariff lines, which differ by country — use the duty calculator for lane estimates. For binding certainty, request a ruling from the destination customs authority.

Other headings in Chapter 29

• 2901 — Acyclic hydrocarbons
• 2902 — Cyclic hydrocarbons
• 2903 — Halogenated derivatives of hydrocarbons
• 2904 — Sulphonated, nitrated or nitrosated derivatives of hydrocarbons; wheth…
• 2905 — Acyclic alcohols and their halogenated, sulphonated, nitrated or nitro…
• 2906 — Alcohols; cyclic, and their halogenated, sulphonated, nitrated or nitr…
• 2907 — Phenols; monophenols, polyphenols, and phenol-alcohols
• 2908 — Phenols or phenol-alcohols; halogenated, sulphonated, nitrated or nitr…
• 2909 — Ethers, ether-alcohols, ether-phenols, ether-alcohol-phenols, alcohol …
• 2910 — Epoxides, epoxyalcohols, epoxyphenols and epoxyethers; with a three-me…
• 2911 — Acetals and hemiacetals; whether or not with other oxygen function, an…
• 2912 — Aldehydes, whether or not with other oxygen function; cyclic polymers …
• 2913 — Aldehydes; halogenated, sulphonated, nitrated or nitrosated derivative…
• 2914 — Ketones and quinones; whether or not with other oxygen function, and t…
• 2915 — Acids; saturated acyclic monocarboxylic acids and their anhydrides, ha…
• 2916 — Acids; unsaturated acyclic monocarboxylic, cyclic monocarboxylic, thei…
• 2917 — Acids; polycarboxylic acids, their anhydrides, halides, peroxides and …
• 2918 — Acids; carboxylic acid with additional oxygen function and their anhyd…
• 2919 — Esters; phosphoric, and their salts, including lactophosphates, their …
• 2920 — Esters of other inorganic acids of non-metals (other than of hydrogen …
• 2921 — Amine-function compounds
• 2922 — Oxygen-function amino-compounds
• 2923 — Quaternary ammonium salts and hydroxides; lecithins and other phosphoa…
• 2924 — Carboxyamide-function compounds; amide-function compounds of carbonic …
• 2925 — Carboxyimide-function compounds (including saccharin and its salts) an…
• 2926 — Nitrile-function compounds
• 2927 — Diazo-, azo- or azoxy-compounds
• 2928 — Organic derivatives of hydrazine or of hydroxylamine
• 2929 — Nitrogen-function compounds, n.e.c. in chapter 29
• 2930 — Organo-sulphur compounds
• 2931 — Other organo-inorganic compounds
• 2932 — Heterocyclic compounds with oxygen hetero-atom(s) only
• 2933 — Heterocyclic compounds with nitrogen hetero-atom(s) only
• 2934 — Nucleic acids and their salts, whether or not chemically defined; othe…
• 2936 — Provitamins, vitamins; natural or reproduced by synthesis (including n…
• 2937 — Hormones, prostaglandins, thromboxanes and leukotrienes, natural or re…
• 2938 — Glycosides, natural or reproduced by synthesis, and their salts, ether…
• 2939 — Alkaloids; natural or reproduced by synthesis, and their salts, ethers…
• 2940 — Sugars, chemically pure, other than sucrose, lactose, maltose, glucose…
• 2941 — Antibiotics
• 2942 — Organic compounds; n.e.c. in chapter 29