Tariff number 3815110000 10 - Supported catalysts

Supported catalysts These are catalysts of a widely used type which are deposited on a support, generally by impregnation, coprecipitation or mixing. They usually consist either of one or more active substances deposited on a support or of mixtures with a basis of active substances. The active substances are usually very finely divided metals, metallic oxides or other metallic compounds. The metals most commonly used are those belonging to group VIII of the periodic table (especially cobalt, nickel, palladium and platinum) and molybdenum, chromium, copper and zinc. The support generally consists of alumina, silica gel, fossil meal, whether or not activated, ceramic materials, etc. They are used in industrial processes for the production of organic and inorganic compounds and in petroleum refining (for example, in ammonia synthesis, hydrogenation of fats, hydrogenation of olefins). This category of catalysts also includes the following products: 1. certain preparations, based on compounds of transition metals, the function of which is to facilitate oxidation, and consequently elimination in the form of carbon dioxide in the course of combustion, of carbon residues (as in boilers and burners); 2. ‘post-combustion’ catalysts intended to be introduced into the exhaust systems of motor vehicles in order to reduce the polluting effect of the exhaust gases by converting the carbon monoxide into carbon dioxide and by converting other toxic products (for example, heterocyclic compounds) resulting from the combustion of petrol.

Notes 1. This chapter does not cover: (a) separate chemically defined elements or compounds with the exception of the following: (1) artificial graphite (heading 3801); (2) insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and plant-growth regulators, disinfectants and similar products, put up as described in heading 3808; (3) products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades (heading 3813); (4) certified reference materials specified in note 2 below; (5) products specified in note 3(a) or 3(c) below; (b) mixtures of chemicals with foodstuffs or other substances with nutritive value, of a kind used in the preparation of human foodstuffs (generally, heading 2106); (c) products of heading 2404; (d) slag, ash and residues (including sludges, other than sewage sludge), containing metals, arsenic or their mixtures and meeting the requirements of note 3(a) or 3(b) to Chapter 26 (heading 2620); (e) medicaments (heading 3003 or 3004); or (f) spent catalysts of a kind used for the extraction of base metals or for the manufacture of chemical compounds of base metals (heading 2620), spent catalysts of a kind used principally for the recovery of precious metal (heading 7112) or catalysts consisting of metals or metal alloys in the form of, for example, finely divided powder or woven gauze (Section XIV or XV). 2. (A) For the purpose of heading 3822, the expression ‘certified reference materials’ means reference materials which are accompanied by a certificate which indicates the values of the certified properties, the methods used to determine these values and the degree of certainty associated with each value and which are suitable for analytical, calibrating or referencing purposes. (B) With the exception of the products of Chapter 28 or 29, for the classification of certified reference materials, heading 3822 shall take precedence over any other heading in the nomenclature. 3. Heading 3824 includes the following goods which are not to be classified in any other heading of the nomenclature: (a) cultured crystals (other than optical elements) weighing not less than 2,5 g each, of magnesium oxide or of the halides of the alkali or alkaline-earth metals; (b) fusel oil; Dippel's oil; (c) ink removers put up in packings for retail sale; (d) stencil correctors, other correcting fluids and correction tapes (other than those of heading 9612), put up in packings for retail sale; and (e) ceramic firing testers, fusible (for example, Seger cones). 4. Throughout the nomenclature, ‘municipal waste’ means waste of a kind collected from households, hotels, restaurants, hospitals, shops, offices, etc., road and pavement sweepings, as well as construction and demolition waste. Municipal waste generally contains a large variety of materials such as plastics, rubber, wood, paper, textiles, glass, metals, food materials, broken furniture and other damaged or discarded articles. The term ‘municipal waste’, however, does not cover: (a) individual materials or articles segregated from the waste, for example wastes of plastics, rubber, wood, paper, textiles, glass or metals, electrical and electronic waste and scrap (including spent batteries) which fall in their appropriate headings of the nomenclature; (b) industrial waste; (c) waste pharmaceuticals, as defined in note 4(k) to Chapter 30; or (d) clinical waste, as defined in note 6(a) below. 5. For the purposes of heading 3825, ‘sewage sludge’ means sludge arising from urban effluent treatment plant and includes pre-treatment waste, scourings and unstabilised sludge. Stabilised sludge when suitable for use as fertiliser is excluded (Chapter 31). 6. For the purposes of heading 3825, the expression ‘other wastes’ applies to: (a) clinical waste, that is, contaminated waste arising from medical research, diagnosis, treatment or other medical, surgical, dental or veterinary procedures, which often contain pathogens and pharmaceutical substances and require special disposal procedures (for example, soiled dressings, used gloves and used syringes); (b) waste organic solvents; (c) wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freezing fluids; and (d) other wastes from chemical or allied industries. The expression ‘other wastes’ does not, however, cover wastes which contain mainly petroleum oils or oils obtained from bituminous minerals (heading 2710). 7. For the purposes of heading 3826, the term ‘biodiesel’ means mono-alkyl esters of fatty acids of a kind used as a fuel, derived from animal, vegetable or microbial fats and oils whether or not used. Subheading notes 1. Subheadings 3808 52 and 3808 59 cover only goods of heading 3808, containing one or more of the following substances : alachlor (ISO); aldicarb (ISO); aldrin (ISO); azinphos-methyl (ISO); binapacryl (ISO); camphechlor (ISO) (toxaphene); captafol (ISO); carbofuran (ISO); chlordane (ISO); chlordimeform (ISO); chlorobenzilate (ISO); DDT (ISO) (clofenotane (INN), 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane); dieldrin (ISO, INN); 4,6-dinitro-o-cresol (DNOC (ISO)) or its salts; dinoseb (ISO), its salts or its esters; endosulfan (ISO); ethylene dibromide (ISO) (1,2-dibromoethane); ethylene dichloride (ISO) (1,2-dichloroethane); fluoroacetamide (ISO); heptachlor (ISO); hexachlorobenzene (ISO); 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO, INN); mercury compounds; methamidophos (ISO); monocrotophos (ISO); oxirane (ethylene oxide); parathion (ISO); parathion-methyl (ISO) (methyl-parathion); pentachlorophenol (ISO), its salts or its esters; perfluorooctane sulphonic acid and its salts; perfluorooctane sulphonamides; perfluorooctane sulphonyl fluoride; phosphamidon (ISO); 2,4,5-T (ISO) (2,4,5-trichlorophenoxyacetic acid), its salts or its esters; tributyltin compounds; trichlorfon (ISO). 2. Subheadings 3808 61 to 3808 69 cover only goods of heading 3808, containing alpha-cypermethrin (ISO), bendiocarb (ISO), bifenthrin (ISO), chlorfenapyr (ISO), cyfluthrin (ISO), deltamethrin (INN, ISO), etofenprox (INN), fenitrothion (ISO), lambda-cyhalothrin (ISO), malathion (ISO), pirimiphos-methyl (ISO) or propoxur (ISO). 3. Subheadings 3824 81 to 3824 89 cover only mixtures and preparations containing one or more of the following substances : oxirane (ethylene oxide); polybrominated biphenyls (PBBs); polychlorinated biphenyls (PCBs); polychlorinated terphenyls (PCTs); tris(2,3-dibromopropyl) phosphate; aldrin (ISO); camphechlor (ISO) (toxaphene); chlordane (ISO); chlordecone (ISO); DDT (ISO) (clofenotane (INN); 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane); dieldrin (ISO, INN); endosulfan (ISO); endrin (ISO); heptachlor (ISO); mirex (ISO); 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO, INN); pentachlorobenzene (ISO); hexachlorobenzene (ISO); perfluorooctane sulphonic acid, its salts; perfluorooctane sulphonamides; perfluorooctane sulphonyl fluoride; tetra-, penta-, hexa-, hepta- or octabromodiphenyl ethers; short-chain chlorinated paraffins. Short-chain chlorinated paraffins are mixtures of compounds, with a chlorination degree of more than 48 % by weight, with the following molecular formula : CxH(2x-y+2)Cly, where x=10 – 13 and y= 1 – 13. 4. For the purposes of subheadings 3825 41 and 3825 49, ‘waste organic solvents’ are wastes containing mainly organic solvents, not fit for further use as presented as primary products, whether or not intended for recovery of the solvents.

PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 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 nomenclature. (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.