WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
29.08 - Halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenolalcohols. - Derivatives containing only halogen substituents and their salts : 2908.1 1 - - Pentachlorophenol (ISO) 2908.19 - - Other - Other : 2908.91 2908.92 2908.99 - - Dinoseb (ISO) and its salts - - 4,6-Dinitro-o-cresol (DNOC (ISO)) and its salts - - Other These are derived horn phenols and henof-alcohols b re lacing one or more hydrogen atoms !), a nitro group <N&), a nitroso group (-NO) or by any by a halogen, a sul ho group (-SO3I combination thereof (A) HALOGENATED DERIVATIVES (1) o-Chlorophenol. Liquid with a strong odour. (2) m-Chlorophenol. Colourless crystals. (3) p-Chlorophenol. Crystalline mass with a disagreeable odour. The three products above are used in organic synthesis (e.g., dyes). (4) p-Chlorwn-cresol (4-chloro-3-methylphenol). An odourless, disinfectant product, slightly soluble in water but easily emulsified with soap. (5) Chlorohydroquinone (chloroquinol). (B) SULPHONATED DERIVATIVES (1) Phenolsulphonic acids (HOC6H4S03H),obtained by sulphonating phenol. (2) Naphtholsulphonic acids, prepared by direct sulphonation of naphthols, or by other processes of s thesis. The constitute an extensive group of compounds used for the manufacture o dyes and inc ude : E" (a) 1-Naphthol-4-sulphonic acid (Neville-Winther acid), brilliant transparent flakes or yellowish-white powder. (b) 2-Naphthol-Gsulphonic acid (Schaeffer acid), a pinkish-white powder. (c) 2-Naphthol-7-sulphonir: acid (F acid), white powder. (d) 1-Naphthol-5-sulphonic acid, deliquescent crystals. (e) 2-Naphthol-8-sulphonic acid (crocein acid), yellowish-white powder. (C) NITRATED DERIVATIVES (1) o-, m- and p-Nitrophenols HOC6&T\T02). Yellowish crystals; used for preparing organic dyestuffs and pharmaceutica products. \ (2) Dinitrophenols (HOC6H3@JO2)2).These are crystalline powders; used for the preparation of explosives, sulphur dyes, etc. (3) Trinitrophenol (picric acid) (HOC6H2(N02)3).Brilliant yellow crystals, odourless and toxic. Used for the treatment of burns and also as an expIosive; its salts are laown as picrates. (4) Dinitro-o-cresols. (5) Trinitroxylenols. (D) NITROSATED DEWATIVES (1) o-, m- andp-Nitrosophenols. The fact that nitrosophenols may react in the tautomeric form of quinone oximes does not affect their classification in this heading. (2) Nitrosonaphthols. Sub-chapter IV ETHERS, ALCOHOL PEROXIDES, ETHER PEROXIDES, KETONE PEROXIDES, EPOXIDES WITH A THREE-MEMBERED RING, ACETALS AND HEMIACETALS, AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES
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.