WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
29.22 - Oxygen-function amino-compounds (+). - Amino-alcohols, other than those containin more than one kind of oxygen function, their ethers and esters; salts thereo : P 2922.1 1 - - Monoethanolarnine and its salts 2922.12 -- Diethanolamine and its salts 2922.13 - - Triethanolarnine and its salts 2922.14 - - Dextropropoxyphene (INN) and its salts 2922.19 - - Other - Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof : 2922.2 1 2922.29 - - Arninohydroxynaphthalenesulphonic acids and their salts - - Other - Amino-aldehydes, amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function; salts thereof : 2922.3 1 - - Ansfepramone (INN), methadone (INN) and nomethadone (INN); salts thereof 2922.39 - - Other - Amino-acids, other than those containing more than function, and their esters; salts thereof: 2922.41 one kind of oxygen - - Lysine and its esters; salts thereof 2922.42 - - Glutamic acid and its salts 2922.43 - - Anthranilic acid and its salts 2922.44 - - Tilidine (INN)and its salts Other 2922.49 -- 2922.50 - Amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen fwlction The term "oxygen-function amino-compounds" means amino-compounds which contain, in addition to an amine function, one or more of the oxygen h c t i o n s defined in Note 4 to Chapter 29 (alcohol, ether, phenol, acetal, aldehyde, ketone, etc., hctions), as well as their or anic and inorganic acid esters. This heading therefore covers amino-corn ounds which are su stitution derivatives of amines containing oxygen h c t i o n s of headings 2g05 to 29.20, and esters and salts thereof. Diazotisable amines and their salts of this heading diluted to standard strengths for the production of azo-dyes are also included here. Organic dyes are excluded fi-om this heading (Chapter 32). (A) AMINO-ALCOHOLS, THEIR ETHERS AND ESTERS; SALTS THEREOF These compounds contain one or more alcohol hydroxyl groups and one or more amino groups bound to atoms of carbon. These compounds contain as oxygen functions on1 alcohols, their ethers or esters, or a combination of these funct~ons.Any oxygen function foun in a non-parent segment attached to a parent amino-alcohol is disregarded for classification purposes. B (I) Monoethanolamine (NH2(CH2CH20H)).Rather viscous, colourless liquid; used for the manufacture of pharmaceuhcal products, soap, etc. (2) Diethanolamine (NH CH2CH20H)2).Colourless crystals or pale liquid; used for absorbing acid gases, in tanning or softening leathers, and in organic synthesis. (3) Triethanolamine (N(CH2CH20H)3).Viscous liquid. A base used in the soap and emulsion industries, and for dressing and finishing fabrics. r (4) (2-Benzoylox 2-methylbutyl)dimethylammonium chloride. Crystalline white powder; used as a loca anaesthetic. (5) Meclofenoxate. (6) Arnolol. (7) Sarpogrelate. (8) Arylethanolamines. (9) Tetramethyl- and tetraethyldiaminobenzhydrol. (10) Aminoethyl nitrate. (1 1) Methyldiethanolamine. (B) AMINO-NAPHTHOLS AND OTHER AMINO-PHENOLS, THEIR ETHERS AND ESTERS; SALTS THEREOF These are phenolic compounds in which one or more hydrogen atoms have been replaced by an oup (-m2). These compounds contain as oxygen functions only phenol functions, their aminoet ers or esters, or a combination of these functions. Any oxygen function found in a nonparent segment attached to a parent amino-naphthol or other amino-phenol is disregarded for classification purposes. W. (I) Aminohydroxynaphthalenesulphonicacids, e.g., (a) 7-Amino-1-naphthol-3-sulphonicacid (gamma acid); @) 8-Amino-1-naphthol-3,6-disulphonic acid (H acid). (3) Amino-o-, m- and p-cresols. (4) Diaminophenols. The ethers of amino-phenols include (a) Anisidines. (b) Dianisidines (bianisidines). (c) Phenetidines. (d) Cresidines. (e) 5-Nitro-2-propoxyaniline(2-amino-4-nitrophenol n-propylether). Hydroxy derivatives of diphenylamine and their salts are also included here. (C) AMINO-ALDEHYDES, AMINO-KETONES AND AMINO-QUINONES; SALTS THEREOF These contain the amino-group associated with the aldehyde group (-CHO), the ketone group (>C=O) or the quinone group (see the Explanatory Note to heading 29.14), respectively. (1) Aminobenzaldehydes. (2) Tetramethyl- and tetraethyldiaminobenzophenones. (3) Amino- and diaminoanthraquinones. (4) Anthrimides. (D) AMINO-ACIDS AND THEIR ESTERS; SALTS THEREOF These corn ounds contain one or more carboxylic acid h c t i o n s and one or more arnine functions. gnhYdrides, halides, peroxides and peroxyacids of carboxylic acids are regarded as acid functions. These compounds contain as ox gen functions only acids, their esters or their anh drides, halides, peroxides and peroxyaci s or a combination of these functions. Any oxygen k c t i o n found in a non-parent segment attached to a parent amino-acid is disregarded for classification purposes. B The amino-acids classified under this heading with their esters, salts and substitution derivatives include : (1) Lgsine (diamino-n-hexanoic acid). Colourless crystals. A cleavage product of silk gum and o er proteins. (2) Glutamic acid. Cleavage product of proteins. Obtained from gluten. Crystals used in medicine or in food industries. (3) Glycine (aminoacetic acid; glycocoll) (H2NCH2COOH). Large, colourless, regularly shaped crystals. Used in organic synthesis, etc. (4) Sarcosine (CH3NHCH2COOH).Methyl derivative of glycine; crystallises in prisms. (5) Alanine (2-aminopropionic acid). Hard needles. (6) p-Alanine (3-aminopropionic acid). Crystalline. (7) Phenylalanine. (8) Valine (a-arninoisovaleric acid). Crystals. (9) Leucine (a-aminoisocaproic acid). Obtained by hydrolysis of proteins; white opalescent crystals. Isoleucine. (10) Aspartic acid. Crystalline. (1 1) o-Aminobenzoic acid (anthranilic acid). Obtained synthetically; used for the manufacture of synthetic indigo. Among its derivatives is methyl anthranilate. (12) rn-Aminobenzoic acid. (l3)p-Aminobenzoic acid. Used in the preparation of dyestuffs, artificial perfumes and anaesthetics; also in medicine for its vitarmn activity. Its derivatives include ethyl and butyl -aminobenzoates. Procaine hydrochloride (diethylaminoeth 1 p-amnobenzoate Rydrochloride), small colourless and odourless crystals, is a loca anaesthetic used by oculists and dentists. Y (14) Phenylglycine. (15) Lisadimate. (E) AMINO-ALCOHOL-PHENOLS, AMJNO-ACID-PHENOLS AND OTHER AMINO-COMPOUNDS WITH OXYGEN FUNCTION This part includes, inter alia : (I) Tyrosine (p-hydroxyphenylalanine). (2) Serine (a-amino-p-hydroxypropionicacid). A cleavage product of silk gum and other proteins. (3) Aminosalicylic acids, including 5-aminosalicylic acid and 4-aminosalicylic acid. Crystalline powders. 5-Aminosalicylic acid is used in inorganic synthesis (e.g., for the manufacture of azo- and sulphur-d es); the sodium salt of 4-aminosalicylic acid is used in medicine for treating pulmonary tu erculosis. (4) Medifoxamine (N,N-dimethyl-2,2-diphenoxyethylamine),an amine compound with acetal function. (5) Propoxycaine. Certain substances of this heading, which are regarded as narcotic drugs or as psychotropic substances under international instruments, are indicated in the list appearing at the end of Chapter 29.
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 headings 29.36 to 29.39 or the sugar ethers, sugar acetals and sugar esters, and their salts, of heading 29.40, or the products of heading 29.41, 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 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 anti- caking 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 specific use rather than for general use; (h) The following products, diluted to standard strengths, for the production of azo dyes : diazonium salts, couplers used for these salts and diazotisable amines and their salts. 2.- This Chapter does not cover : (a) Goods of heading 15.04 or crude glycerol of heading 15.20; (b) Ethyl alcohol (heading 22.07 or 22.08); (c) Methane or propane (heading 27.11); (d) The compounds of carbon mentioned in Note 2 to Chapter 28; (e) Immunological products of heading 30.02; (f) Urea (heading 31.02 or 31.05); (g) Colouring matter of vegetable or animal origin (heading 32.03), synthetic organic colouring matter, synthetic organic products of a kind used as fluorescent brightening agents or as luminophores (heading 32.04) or dyes or other colouring matter put up in forms or packings for retail sale (heading 32.12); (h) Enzymes (heading 35.07); (ij) Metaldehyde, hexamethylenetetramine or similar substances, put up in forms (for example, tablets, sticks or 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 36.06); (k) Products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades, of heading 38.13; ink removers put up in packings for retail sale, of heading 38.24; or (l) Optical elements, for example, of ethylenediamine tartrate (heading 90.01). 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 headings 29.04 to 29.06, 29.08 to 29.11 and 29.13 to 29.20, 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 29.29. For the purposes of headings 29.11, 29.12, 29.14, 29.18 and 29.22, “oxygen function”, the characteristic organic oxygen-containing group of those respective headings, is restricted to the oxygen-functions referred to in headings 29.05 to 29.20. 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 29.42, 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 29.42 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 29.41, 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 29.05). (E) Halides of carboxylic acids are to be classified in the same heading as the corresponding acids. 6.- The compounds of headings 29.30 and 29.31 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 29.30 (organo-sulphur compounds) and heading 29.31 (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 29.32, 29.33 and 29.34 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 29.37 : (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.