2909 30 — Aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives

2909 Ethers, ether-alcohols, ether-phenols, ether-alcohol-phenols, alcohol peroxides, ether peroxides, ketone peroxides (whether or not chemically defined), and their halogenated, sulphonated, nitrated or nitrosated derivatives: – Acyclic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives: 2909 11 – – Diethyl ether 2909 19 – – Other 2909 20 – Cyclanic, cyclenic or cycloterpenic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives 2909 30 – Aromatic ethers and their halogenated, sulphonated, nitrated or nitrosated derivatives – Ether-alcohols and their halogenated, sulphonated, nitrated or nitrosated derivatives: 2909 41 – – 2,2'-Oxydiethanol (diethylene glycol, digol) 2909 43 – – Monobutyl ethers of ethylene glycol or of diethylene glycol 2909 44 – – Other monoalkylethers of ethylene glycol or of diethylene glycol 2909 49 – – Other 2909 50 – Ether-phenols, ether-alcohol-phenols and their halogenated, sulphonated, nitrated or nitrosated derivatives 2909 60 – Alcohol peroxides, ether peroxides, ketone peroxides and their halogenated, sulphonated, nitrated or nitrosated derivatives

(A) Ethers can be considered as alcohols or phenols in which the hydrogen atom of the hydroxyl group is replaced by a hydrocarbon radical (alkyl or aryl). They have the general formula (R-O-R1), where R and R1 can be the same or different.

33 These ethers are very stable, neutral substances. If the radicals concerned belong to the acyclic series, the ether is also acyclic; cyclic radicals give cyclic ethers. The first ether of the acyclic series is gaseous, the others are volatile liquids with a characteristic ethereal odour; the higher members of the series are liquids or sometimes solids. (I) Symmetrical acyclic ethers. (1) Diethyl ether (C2H5·OC2H5). A colourless, refractive liquid with a characteristic burnt odour; extremely volatile and highly flammable. Used as an anaesthetic and in organic synthesis. (2) Di(chloroethyl) ether, or dichlorodiethyl ether. (3) Diisopropyl ether. (4) Dibutyl ether. (5) Dipentyl ether (diamyl ether). (II) Asymmetrical acyclic ethers. (1) Ethyl methyl ether. (2) Ethyl isopropyl ether. (3) Butyl ethyl ethers. (4) Pentyl ethyl ethers. (III) Cyclanic, cyclenic or cycloterpenic ethers. (IV) Aromatic ethers. (1) Anisole (C6H5·OCH3) (methyl phenyl ether). A colourless liquid with a pleasant odour; used in organic synthesis (e.g., in the manufacture of synthetic perfumes), and also as a solvent and as a vermifuge (anthelmintic). (2) Phenetole (ethyl phenyl ether) (C6H5·OC2H5). (3) Diphenyl ether (C6H5·OC6H5). Colourless crystalline needles with an odour resembling that of geranium; used in perfumery. (4) 1,2-Diphenoxyethane (ethylene glycol diphenyl ether). (5) Anethole, contained in aniseed oil. Small crystals at temperatures below 20 °C; at higher temperatures a mobile liquid with a strong odour of aniseed oil. (6) Dibenzyl ether. (7) Nitrophenetoles, nitrated derivatives of phenetole. o-Nitrophenetole is a yellow oil. p-Nitrophenetole is a crystalline substance. (8) Nitroanisoles, nitrated derivatives of anisole. o-Nitroanisole is a liquid. m- and p-Nitroanisoles are crystals in the form of plates. Trinitroanisole is a very powerful explosive.

34 (9) 2-tert-Butyl-5-methyl-4,6-dinitroanisole (synthetic amber musk, or cresol musk), yellowish crystals combining the odours of ambrette seed oil and natural musk. (10) beta-Naphthyl methyl ether and beta-naphthyl ethyl ether (artificial neroli oil, or orange-flower oil). Colourless crystalline powders with an odour similar to that of orange oil. (11) Methyl ethers of m-cresol and of butyl-m-cresols. (12) Phenyl tolyl ether. (13) Ditolyl ether. (14) Benzyl ethyl ether. (B) ETHER-ALCOHOLS Ether-alcohols are derived from polyalcohols or phenol-alcohols by replacing the hydrogen of the phenolic hydroxyl group (in the case of phenol-alcohols) or of one of the alcoholic hydroxyl groups (in the case of polyalcohols) by an alkyl or aryl radical. (1) 2,2'-Oxydiethanol (diethylene glycol, diglycol). A colourless liquid; used in organic synthesis, as a solvent for gums and resins, in the preparation of explosives and plastics. (2) Monomethyl, monoethyl, monobutyl and other monoalkyl ethers of ethylene glycol or of diethylene glycol. (3) Monophenyl ethers of ethylene glycol or of diethylene glycol. (4) Anisyl alcohol. (5) Guaietolin (INN) (glycerol mono(2-ethoxyphenyl) ether); guaifenesin (INN) (glycerol mono(2-methoxyphenyl) ether). (C) ETHER-PHENOLS AND ETHER-ALCOHOL-PHENOLS These compounds are derived from diphenols or phenol-alcohols by replacing the hydrogen of the alcoholic hydroxyl group (in the case of phenol-alcohols) or of one of the phenolic hydroxyl groups (in the case of diphenols) by an alkyl or aryl radical. (1) Guaiacol, found in beechwood tar. The main constituent of wood creosote. Colourless crystals with a characteristic aromatic odour; after melting, guaiacol remains liquid. Used in medicine and in organic synthesis. (2) Sulfogaiacol (INN) (potassium guaiacolsulphonate), a finely divided powder, widely used in medicine. (3) Eugenol, obtained from cloves; a colourless liquid with an odour of cloves. (4) Isoeugenol, obtained synthetically from eugenol. A constituent of nutmeg essential oil. (5) Pyrocatechol monoethyl ether (guaethol), found in the wood oil of Swedish pine. Caustic, colourless crystals with an aromatic odour. (D) PEROXIDES OF ALCOHOLS, OF ETHERS AND OF KETONES These are compounds of the types ROOH, ROOR1, in which R and R1 are organic radicals. Examples are ethyl hydroperoxide and diethyl peroxide.

35 The heading also covers ketone peroxides (whether or not chemically defined), e.g., cyclohexanone peroxide (1-hydroperoxycyclohexyl 1-hydroxydicyclohexyl peroxide). The heading further covers halogenated, sulphonated, nitrated or nitrosated derivatives of ethers, ether-alcohols, ether-phenols, ether-alcohol-phenols, alcohol peroxides, ether peroxides or ketone peroxides, and complex derivatives (e.g., nitrosulphonated, sulphohalogenated, nitrohalogenated and nitrosulphohalogenated derivatives). The heading excludes peroxyketals (heading 2911).

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.