2932 93 000 0 — Heterocyclic compounds with oxygen hetero-atom(s) only: other: piperonal

2932 Heterocyclic compounds with oxygen hetero-atom(s) only (+): – compounds containing an unfused furan ring (whether or not hydrogenated) in the structure: 2932 11 – – tetrahydrofuran 2932 12 – – 2-furaldehyde (furfuraldehyde) 2932 13 – – furfuryl alcohol and tetrahydrofurfuryl alcohol 2932 14 – – sucralose 2932 19 – – other 2932 20 – lactones – other: 2932 91 – – isosafrole 2932 92 – – 1-(1,3-benzodioxol-5-yl)propan-2-one 2932 93 – – piperonal 2932 94 – – safrole 2932 95 – – tetrahydrocannabinols (all isomers) 2932 99 – – other

The heterocyclic compounds to be classified in this heading include: (A) Compounds containing in the structure a non-condensed furan ring (hydrogenated or non-hydrogenated). This includes, inter alia: (1) Tetrahydrofuran. A colorless liquid. (2) 2-Furaldehyde (furfural). Received by distillation of bran grain crops with sulfuric acid. A colorless liquid with a characteristic aromatic smell; in the air it acquires a yellow and then brown color. It is used for purification of mineral oils, in the preparation of synthetic x resins, as well as as a solvent for nitrocellulose and varnishes, as an insecticide, etc. (3) Furfurylic alcohol. A colorless liquid that darkens in the air. It reacts violently with concentrated mineral acids. It is used as a nitrocellulose solvent, for the production of varnishes and protective waterproof coatings. (4) Tetrahydrofurfuryl alcohol. A colorless liquid. (5) Sucralose* (1,6-dichloro-1,6-dideoxy-β-D-fructofuranosyl-4-chloro-4-deoxy-α-D-galactopyranoside). Crystalline powder odorless, white or almost white

84 colors. An artificial sweetener used mainly in medicine and food, especially in the treatment of diabetes. (6) Furan. (B) Lactones. These compounds can be considered as internal esters of carboxylic acids with an alcohol or phenolic functional group, obtained by splitting water. The molecules may contain one or more etheric functional groups in the ring. They are known as mono-, di-, trilactones, etc. according to the number of complex etheric groups present. However, cyclic polyalcoholic esters with polybasic acids are not included (see note 7 to this chapter). Lactones are quite stable compounds, but under the action of alkali, the lactone ring can easily open. This part includes, inter alia: (a) coumarin (1,2-benzopyrone). This compound is lactone orthocumaric acid. It crystallizes, forming white flakes. It is used in perfumery, medicine, as well as for aromatization of full-time oil plums, castor oil, medicines, etc. This compound also slows the germination of seeds; (b) methyl coumarine. They have the same appearance as coumarin, and are also used in perfumes; (c) ethylcoumarins; (d) dicumarol (dicumarin) . Chrys tallas. Used in surgery as an anticoagulant; (e) 7-hydroxycumarine (umbelliferon). White crystals. It absorbs ultraviolet rays, and therefore finds applications in the production of lotions and sunscreens; (f) dihydroxycumarines (esculetine and daphnetine) . The glucosides of dihydroxycumarines (esculin and daphnine) are classified in heading 2938; (g) nonalactone. Colorless or yellowish liquid; used in perfumery; (h) undecalactone. Appearance and scope are the same as nonalactone; (ij) butyrolactone (lactone hydroxybutyric acid). Colorless liquid with a pleasant smell; mixed with water. Intermediate and solvent for synthetic resins. Used in the production of preparations for oil paint removal, as well as in the petroleum industry; (k) propionolactone. A liquid soluble in water. Disinfectant and sterilizing agent and bactericide; (l) glucuronolactone (glucuronic acid lactone) White powder, easily soluble in water. Used in medicine and as a growth stimulant; (m) D-gluconolactone (δ-lactone gluconic acid) Soluble crystals. Used in foods as an acidifying substance; (n) pantolactone. Soluble crystals. It is used for purification of p antothenic acid;

85 (o) santonine. It is an internal complex ester of santhonic acid extracted from the wormwood of the citvar, dried unopened head inflorescences Artemisia cina. Crystals without color and odor; a rather strong antihelminthic (antihelminthic) agent; (p) phenolphthalein. Receive condensation of phthalic anhydride with phenol. White or yellowish-white crystalline powder odorless, soluble in ethanol. It reacts with alkalis with a cherry-red color, which disappears when the solution is acidified. Used as a chemical reagent and as a laxative. This group includes iodphenolphthalein. Yellow powder, also used as a laxative. This heading, however, does not cover: (i) sodium derivatives of phthalene tetrahalides (heading 2918); (ii) fluorescein (resorcine-phthalene) (heading 3204); (p) thymolphthalene. White crystals; also used as a reagent in analysis and medicine; (c) isoascorbic acid. Granular crystals. It should be noted, however, that this heading does not include ascorbic acid (heading 2936); (t) dehydracetic acid. Colorless crystals not soluble in water; (y) ambrettolide. Colorless liquid with a muscat smell, used in perfumery; (f) dicquet. Colorless non-hygroscopic liquid; (x) 3,6-dimethyl-1,4-dioxane-2,5-dione. (B) Other heterocyclic compounds containing only heteroatom(s) of oxygen. This includes, inter alia: (1) Benzofuran (coumaron). It is found in light oils when distilling coal tar. Colorless liquid used in the production of synthetic plastics (coumaronic resins) etc. (2) 1,3-Dioxolane. (3) 1,4-Dioxane (diethylene dioxide). It is used as a solvent. (4) 1,3-Dioxane. (5) Safrol. It comes from sassafras oil. Colorless liquid, acquiring a yellowish color; used in perfumery and as a precursor for methylene dioxyamphetamine and methylene dioxymethamphetamine (see the list of precursors at the end of group 29). (6) Isasafrol. Received from safrole; used in perfumery and as a precursor for methylenedioxyamphetamine and methylenedioxymethamphetamine (see the list of precursors at the end of Chapter 29). (7) Tetrahydrocannabinols. (8) Piperonal (piperonylaldehyde or heliotropin) (CH 2O2·C6H3·CHO). White crystals or flakes with the smell of heliotrope; used in perfumery and for

86 aromatization of liquors and as a precursor for methylenedioxyamphetamine and methylenedioxymethamphetamine (see the list of precursors at the end of Chapter 29). (9) Piperonyl acid. (10) 1-(1,3-Benzodioxol-5-yl)propane-2-one (3,4-methylenedioxyphenylacetone). Crystals from white to yellowish color. Used as a precursor in the production of methylenedioxyamphetamine and methylenedioxymethamphetamine (see the list of precursors at the end of Chapter 29). Hydromercuriodibromofluorescein is classified in heading 2852. Certain substances of this heading relating under international instruments to narcotic drugs or psychotropic substances are listed at the end of Chapter 29. This heading does not cover: (a) ketones peroxides (heading 2909); (b) epoxides with a three-membered ring (heading 2910); (c) cyclic polymers of aldehydes (heading 2912) or thioaldehydes (heading 2930); (d) anhydrides of polybasic carboxylic acids and cyclic esters of polyalcoins or phenols with polybasic acids (heading 2917). Explanation of the subheading. Subheading 2932 20 Lactones containing an additional heteroatom other than a lactone group oxygen atom (e.g., dilactone) in the same ring shall not be included in subheadings dealing with lactones. In such cases, an additional heteroatom should be taken into account in determining the classification. For example, anhydromethylene limonic acid is to be classified in subheading 2932 99 and not in subheading 2932 20. If the etheric functional group is part of two or more rings and if one of these rings does not contain an additional heteroatom (other than an oxygen atom of the lactone group), such a molecule should be considered a lactone. For inclusion in subheading 2932 2 0, lactones must have different lactone groups separated by at least one m carbon atom at each end. However, this subheading does not include products in which carbon atoms separating and adjacent to lactone groups form an oxo group (>C=O), an imino group (>C=NH) or a thiox group (>C=S).

Notes

Machine translation. The original is the Russian text of the EAEU tariff, and customs goes by it; this translation is for understanding only and has no legal force.

1. Unless otherwise specified in the context, the headings of this chapter include only:

(a) individual organic compounds of a particular chemical composition, whether or not containing impurities;

(b) mixtures of two or more isomers of the same organic compound (containing or not containing impurities), except for mixtures of isomers of acyclic hydrocarbons (but not stereoisomers), saturated or unsaturated (Chapter 27);

(c) products of headings 2936 to 2939 or simple esters of sugars, acetals of sugars, esters of sugars and their salts, of heading 2940, or products of heading 2941, whether chemically defined or indefinite;

(d) products referred to in points (a), (b) or (c) above dissolved in water;

(e) products referred to in points (a), (b) or (c) above dissolved in other solvents, provided that dissolution is the usual and necessary method used solely for the preservation or transportation of these products, and that the solvent does not render the product suitable for a specific application other than conventional use;

(f) products referred to in points (a), (b), (c), (d) or (e) above, with the addition of a stabilizing substance (including an anti-traceability agent) necessary for their preservation or transport;

(g) products referred to in points (a), (b), (c), (d), (e) or (f) above, with the addition of an anti-dust agent or a coloring or fragrant substance or emetic to facilitate their identification or for safety purposes, provided that these additives do not make the product suitable for a specific use other than traditional use;

(h) the following products diluted to a standard concentration for the production of azo dyes: diazonium salts, substances reacting with these salts, diazotizing amines and their salts.

2. This group does not include:

(a) the goods of heading 1504 or of raw glycerol of heading 1520;

(b) ethyl alcohol (heading 2207 or 2208);

(c) methane or propane (heading 2711);

(d) the carbon compounds referred to in Note 2 to Chapter 28;

(e) immunological products of heading 3002;

(f) urea (heading 3102 or 3105);

(g) dyes of vegetable or animal origin (heading 3203), synthetic organic dyes, synthetic organic products used as optical bleaches or phosphors (heading 3204), or dyes or other dyes packaged in molds or packages for retail sale (heading 3212);

(h) enzymes (heading 3507);

(ij) metaldehyde, hexamethylenetetramine or similar substances, packaged in moulds (e.g. tablets, sticks or similar forms) intended for use as fuel, or liquid or liquefied gaseous fuel in containers of not more than 300 cm in capacity, used for filling or refilling cigarette or similar lighters (heading 3606);

(k) products supplied as fire extinguishing charges or grenades for extinguishing fires of heading 3813; ink stain removal preparations packaged for retail sale of heading 3824; or

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

3. Goods which may be included in two or more headings of this Chapter are classified in the heading, the latter in ascending order of the codes in this Chapter of the Nomenclature.

4. For the purposes of headings 2904 to 2906, 2908 to 2911 and 2913 to 2920, any reference to halogenated, sulfonated, nitrated or nitrosed derivatives also applies to mixed derivatives such as sulfohalogenated, nitrohalogenated, nitrosulfonated or nitrosulfohalogenated derivatives.

For the purposes of heading 2929, nitrogen or nitrozo groups are not regarded as nitrogen-containing functional groups.

For the purposes of headings 2911, 2912, 2914, 2918 and 2922, the term “oxygen-containing functional group” means that the characteristic organic oxygen-containing groups of these headings are limited to the oxygen-containing functional groups referred to in headings 2905 to 2920.

5. (A) Esters of organic compounds with acidic functional groups of subgroups I to VII with organic compounds of the same subgroups shall be included with that of them which falls in the heading last in ascending order of codes in these subgroups of the Nomenclature.

(B) Ethyl alcohol esters with organic compounds with acid functional groups of subgroups I to VII are to be classified in the same headings as the corresponding organic compounds with acid functional groups.

(C) Subject to note 1 to section VI and note 2 to chapter 28:

(1) Inorganic salts of organic compounds, such as compounds with acidic, phenolic or enolic functional groups, or organic bases of subgroups I to X or heading 2942, are to be classified in the headings for organic compounds;

(2) salts resulting from chemical reactions between organic compounds of subgroups I to X or heading 2942 are to be classified in the heading for the base or acid (including compounds with phenolic or enolic functional groups) from which these salts are formed, the latter in ascending order of the codes in the group; and

(3) Coordinating or complex compounds, other than substances of sub-group XI or heading 2941, are classified in the heading last in ascending order of the codes of Chapter 29, among those suitable for fragments formed by the "splitting" of all metal bonds other than metal-carbon bonds.

(D) Metal alcohols are to be classified in the same heading as the alcohols concerned, with the exception of ethanol (heading 2905).

(E) Carboxylic acid halides are to be classified in the same heading as the corresponding acids.

6. The compounds of headings 2930 and 2931 are organic compounds whose molecules, in addition to hydrogen, oxygen or nitrogen atoms, contain atoms of other nonmetals or metals (such as sulfur, arsenic or lead) directly bound to carbon atoms.

Headings 2930 (organic sulphur compounds) and 2931 (other organo-inorganic compounds) do not include sulfonated or halogenated derivatives (including complex derivatives) which, in addition to hydrogen, oxygen and nitrogen, have only directly carbon-related sulphur or halogen atoms giving them the properties of sulfonated or halogenated derivatives (or complex derivatives).

7. Headings 2932 to 2934 do not include three-membered ring epoxides, ketone peroxides, cyclic polymers of aldehydes or thioaldehydes, anhydrides of polybasic carboxylic acids, cyclic esters of polyalcohols or phenols with polybasic acids or imides of polybasic acids.

These provisions are applicable only if heteroatom cycles are formed only as a result of the cyclization reaction or as a result of the reactions mentioned above.

8. In heading 2937:

(a) the term “hormones” covers release hormones or factors that stimulate hormone secretion, hormone inhibitors and hormone antagonists (antihormones);

(b) the term “mainly used as hormones” applies not only to hormone derivatives and their structural analogues used principally for hormonal action, but also to such derivatives and structural analogues as are used principally as intermediates in the synthesis of substances of this heading.

Subheading notes

English text as published in Annex I to Regulation (EU) 2021/1832 (Combined Nomenclature). The EAEU tariff and the EU nomenclature copy these notes from the same convention. For a Russian declaration the binding version is the Russian one: Annex to Decision No 80 of the EEC Council of 14 September 2021.

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.

Additional notes of the Eurasian Economic Union

Machine translation. The original is the Russian text of the EAEU tariff, and customs goes by it; this translation is for understanding only and has no legal force.

1. Subheading 2901 10 000 1 covers ethane, butane and isobutane in the form of separate isomers of a purity of 95% or more. This percentage of compounds is calculated respectively by volume for gaseous products or by weight for liquefied products. Ethane, butane and isobutane having a lower degree of purity fall in heading 2711.

2. Subheading 2901 10 000 2 covers pentane and isopentane as separate isomers of a purity of 95 % or more by weight.