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Heading 2917 - Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives

Heading
2917
Classification
Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives
Date of trade
2 June 2026
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There are 64 commodities in this category. Choose the commodity code that best matches your goods to see more information. If your item is not listed by name, it may be shown under what it's used for, what it's made from or 'Other'.

There are important notes for classifying your goods shown further down this page

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The number following each commodity's description is its commodity code. Description
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Footnotes
Code Description
TN701 According to the Council Regulation (EU) No 692/2014 (OJ L183, p. 9), as retained in UK Law, it shall be prohibited to import into European Union goods originating in Crimea or Sevastopol.
The prohibition shall not apply in respect of:
(a) the execution until 26 September 2014, of trade contracts concluded before 25 June 2014, or of ancillary contracts necessary for the execution of such contracts, provided that the natural or legal persons, entity or body seeking to perform the contract have notified, at least 10 working days in advance, the activity or transaction to the competent authority of the Member State in which they are established.
(b) goods originating in Crimea or Sevastopol which have been made available to the Ukrainian authorities for examination, for which compliance with the conditions conferring entitlement to preferential origin has been verified and for which a certificate of origin has been issued in accordance with Regulation (EU) No 978/2012 and Regulation (EU) No 374/2014, as retained in UK Law, or in accordance with the EU-Ukraine Association Agreement
TN702 According to the Council Regulation (EU) No 1351/2014 (OJ L365, p. 46), the export of goods and technologies suited for use in the sectors of transport; telecommunications; energy; prospection, exploatation and production of oil, gas and mineral resources is prohibited:
(a) to any natural or legal person, entity or body in Crimea or Sevastopol, or
(b) for use in Crimea or Sevastopol.
The prohibitions shall be without prejudice to the execution until 21 March 2015 of an obligation arising from a contract concluded before 20 December 2014, or by ancillary contracts necessary for the execution of such contracts, provided that the competent authority has been informed at least five working days in advance.
When related to the use in Crimea or Sevastopol, the prohibitions do not apply where there are no reasonable grounds to determine that the goods and technology or the services are to be used in Crimea or Sevastopol.

Chapter notes

  1. Except where the context otherwise requires, the headings of this chapter apply only to:

    a. separate chemically defined organic compounds, whether or not containing impurities;

    b. mixtures of two or more isomers of the same organic compound (whether or not containing impurities), except mixtures of acyclic hydrocarbon isomers (other than stereoisomers), whether or not saturated (Chapter 27);

    c. the products of heading 2936 to 2939 or the sugar ethers, sugar acetals and sugar esters, and their salts, of heading 2940, or the products of heading 2941, whether or not chemically defined;

    d. the products mentioned in (a), (b) or (c) above dissolved in water;

    e. the products mentioned in (a), (b) or (c) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for a specific use rather than for general use;

    f. the products mentioned in (a), (b), (c), (d) or (e) above with an added stabiliser (including an anticaking agent) necessary for their preservation or transport;

    g. the products mentioned in (a), (b), (c), (d), (e) or (f) above with an added anti-dusting agent or a colouring or odoriferous substance or an emetic added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for a specific use rather than for general use;

    h. the following products, diluted to standard strengths, for the production of azo dyes: diazonium salts, couplers for these salts and diazotisable amines and their salts.

  2. This chapter does not cover:

    a. goods of heading 1504 or crude glycerol of heading 1520;

    b. ethyl alcohol (heading 2207 or 2208);

    c. methane or propane (heading 2711);

    d. the compounds of carbon mentioned in note 2 to Chapter 28;

    e. immunological products of heading 3002;

    f. urea (heading 3102 or 3105);

    g. colouring matter of vegetable or animal origin (heading 3203), synthetic organic colouring matter, synthetic organic products of a kind used as fluorescent brightening agents or as luminophores (heading 3204) or dyes or other colouring matter put up in forms or packings for retail sale (heading 3212);

    h. enzymes (heading 3507);

    ij. metaldehyde, hexamethylenetetramine or similar substances, put up in forms (for example, tablets, sticksor similar forms) for use as fuels, or liquid or liquefied-gas fuels in containers of a kind used for filling or refilling cigarette or similar lighters and of a capacity not exceeding 300 cm3 (heading 3606);

    k. products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades, of heading 3813; ink removers put up in packings for retail sale, of heading 3824; or

    l. optical elements, for example, of ethylenediamine tartrate (heading 9001)

  3. Goods which could be included in two or more of the headings of this chapter are to be classified in that one of those headings which occurs last in numerical order.

  4. In heading 2904 to 2906, 2908 to 2911 and 2913 to 2920, any reference to halogenated, sulphonated, nitrated or nitrosated derivatives includes a reference to compound derivatives, such as sulphohalogenated, nitrohalogenated, nitrosulphonated or nitrosulphohalogenated derivatives.

    Nitro or nitroso groups are not to be taken as ‘nitrogen-functions’ for the purposes of heading 2929.

    For the purposes of heading 2911, 2912, 2914, 2918 and 2922, ‘oxygen-function’, the characteristic organic oxygen-containing group of those respective headings, is restricted to the oxygen-functions referred to in heading 2905 to 2920.

  5. (A) The esters of acid-function organic compounds of sub-chapters I to VII with organic compounds of these sub-chapters are to be classified with that compound which is classified in the heading which occurs last in numerical order in these sub-chapters.

    (B) Esters of ethyl alcohol with acid-function organic compounds of sub-chapters I to VII are to be classified in the same heading as the corresponding acid-function compounds.

    (C) Subject to Note 1 to Section VI and Note 2 to Chapter 28:

    1. inorganic salts of organic compounds such as acid-, phenol- or enol-function compounds or organic bases, of sub-chapters I to X or heading 2942 are to be classified in the heading appropriate to the organic compound;

    2. salts formed between organic compounds of sub-chapters I to X or heading 2942 are to be classified in the heading appropriate to the base or to the acid (including phenol-or enol-function compounds) from which they are formed, whichever occurs last in numerical order in the chapter; and

    3. co-ordination compounds, other than products classifiable in sub-chapter XI or heading 2941, are to be classified in the heading which occurs last in numerical order in Chapter 29, among those appropriate to the fragments formed by ‘cleaving’ of all metal bonds, other than metal-carbon bonds.

    (D) metal alcoholates are to be classified in the same heading as the corresponding alcohols except in the case of ethanol (heading 2905);

    (E) Halides of carboxylic acids are to be classified in the same heading as the corresponding acids.

  6. The compounds of heading 2930 and 2931 are organic compounds the molecules of which contain, in addition to atoms of hydrogen, oxygen or nitrogen, atoms of other non-metals or of metals (such as sulphur, arsenic or lead) directly linked to carbon atoms. Heading 2930 (organo-sulphur compounds) and heading 2931 (other organo-inorganic compounds) do not include sulphonated or halogenated derivatives (including compound derivatives) which, apart from hydrogen, oxygen and nitrogen, only have directly linked to carbon the atoms of sulphur or of a halogen which give them their nature of sulphonated or halogenated derivatives (or compound derivatives).

  7. Headings 2932, 2933 and 2934 do not include epoxides with a three-membered ring, ketone peroxides, cyclic polymers of aldehydes or of thioaldehydes, anhydrides of polybasic carboxylic acids, cyclic esters of polyhydric alcohols or phenols with polybasic acids, or imides of polybasic acids. These provisions apply only when the ring-position hetero-atoms are those resulting solely from the cyclising function or functions here listed.

  8. For the purposes of heading 2937:

    a. the term ‘hormones’ includes hormone-releasing or hormone-stimulating factors, hormone inhibitors and hormone antagonists (anti-hormones);

    b. the expression ‘used primarily as hormones’ applies not only to hormone derivatives and structural analogues used primarily for their hormonal effect, but also to those derivatives and structural analogues used primarily as intermediates in the synthesis of products of this heading.

Subheading notes

  1. Within any one heading of this chapter, derivatives of a chemical compound (or group of chemical compounds) are to be classified in the same subheading as that compound (or group of compounds), provided that they are not more specifically covered by any other subheading and that there is no residual subheading named ‘Other’ in the series of subheadings concerned.

  2. Note 3 to chapter 29 does not apply to the subheadings of this chapter.

Section notes

  1. (A) Goods (other than radioactive ores) answering to a description in heading 2844 or 2845 are to be classified in those headings and in no other heading of the classification.

    (B) Subject to paragraph (A) above, goods answering to a description in heading 2843, 2846 or 2852 are to be classified in those headings and in no other heading of this section.

  2. Subject to Note 1 above, goods classifiable in heading 3004, 3005, 3006, 3212, 3303, 3304, 3305, 3306, 3307, 3506, 3707 or 3808 by reason of being put up in measured doses or for retail sale are to be classified in those headings and in no other heading of the nomenclature.

  3. Goods put up in sets consisting of two or more separate constituents, some or all of which fall in this section and are intended to be mixed together to obtain a product of Section VI or VII, are to be classified in the heading appropriate to that product, provided that the constituents are:

    a. having regard to the manner in which they are put up, clearly identifiable as being intended to be used together without first being repacked;

    b. presented together; and

    c. identifiable, whether by their nature or by the relative proportions in which they are present, as being complementary one to another.

  4. Where a product answers to a description in one or more of the headings in Section VI by virtue of being described by name or function and also to heading 3827, then it is classifiable in a heading that references the product by name or function and not under heading 3827.

General Rules for the Interpretation of goods

Classification of goods in the Tariff shall be governed by the following principles:

Rule 1

The titles of sections, chapters and sub-chapters are provided for ease of reference only. For legal purposes, classification shall be determined according to the terms of the headings and any relative section or chapter notes and, provided such headings or notes do not otherwise require, according to the following provisions.

Rule 2

  1. Any reference in a heading to an article shall be taken to include a reference to that article incomplete or unfinished, provided that, as presented, the incomplete or unfinished article has the essential character of the complete or finished article. It shall also be taken to include a reference to that article complete or finished (or falling to be classified as complete or finished by virtue of this rule), presented unassembled or disassembled.
  2. Any reference in a heading to a material or substance shall be taken to include a reference to mixtures or combinations of that material or substance with other materials or substances. Any reference to goods of a given material or substance shall be taken to include a reference to goods consisting wholly or partly of such material or substance. The classification of goods consisting of more than one material or substance shall be according to the principles of rule 3.

Rule 3

When, by application of rule 2(b) or for any other reason, goods are prima facie classifiable under two or more headings, classification shall be effected as follows:

  1. the heading which provides the most specific description shall be preferred to headings providing a more general description. However, when two or more headings each refer to part only of the materials or substances contained in mixed or composite goods or to part only of the items in a set put up for retail sale, those headings are to be regarded as equally specific in relation to those goods, even if one of them gives a more complete or precise description of the goods;
  2. mixtures, composite goods consisting of different materials or made up of different components, and goods put up in sets for retail sale, which cannot be classified by reference to 3(a), shall be classified as if they consisted of the material or component which gives them their essential character, insofar as this criterion is applicable;
  3. when goods cannot be classified by reference to 3(a) or (b), they shall be classified under the heading which occurs last in numerical order among those which equally merit consideration.
Rule 4

Goods which cannot be classified in accordance with the above rules shall be classified under the heading appropriate to the goods to which they are most akin.

Rule 5

In addition to the foregoing provisions, the following rules shall apply in respect of the goods referred to therein:

  1. camera cases, musical instrument cases, gun cases, drawing-instrument cases, necklace cases and similar containers, specially shaped or fitted to contain a specific article or set of articles, suitable for long-term use and presented with the articles for which they are intended, shall be classified with such articles when of a kind normally sold therewith. This rule does not, however, apply to containers which give the whole its essential character;
  2. subject to the provisions of rule 5(a), packing materials and packing containers ( 1 ) presented with the goods therein shall be classified with the goods if they are of a kind normally used for packing such goods. However, this provision is not binding when such packing materials or packing containers are clearly suitable for repetitive use.

Rule 6

For legal purposes, the classification of goods in the subheadings of a heading shall be determined according to the terms of those subheadings and any related subheading notes and, mutatis mutandis, to the above rules, on the understanding that only subheadings at the same level are comparable. For the purposes of this rule, the relative section and chapter notes also apply, unless the context requires otherwise.