WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
38.25 - Residual products of the chemical or allied industries, not elsewhere speciiied or included; municipal waste; sewage sludge; other wastes specified in Note 6 to this Chapter. 3825.10 3825.20 3825.30 - Municipal waste - Sewage sludge - Clinical waste - Waste organic solvents : 3825.41 3825.49 3825.50 - - Halogenated - - Other - Wastes of metal pickling freeze fluids - 3825.6 1 3825.69 3825.90 liquors, hydraulic fluids, brake fluids and anti- Other wastes from chemical or allied industries : - - Mainly containing organic constituents - - Other - Other (A) RESIDUAL PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES, NOT ELSEWHERE SPECIFIED OR INCLUDED (1) Alkaline iron oxide for the ferric oxide, obtained as a aluminium from bauxite. of gas (in particular, coal-gas) containing impure from one of the processes of the extraction of also contain sodium carbonate, silica, etc. (2) Residues from the manufacture of antibiotics (called "cakes"), with a very low antibiotic content, suitable for use for the preparation of compound mmal feeds. (3) Ammoniacal as liquors, produced as an aqueous portion settling out from the crude coal tar condensed om coal gas, and also by the abso tion of ammonia in the waters used for washing coal. They are usually concentrated be ore transportation. They are brownish li uids and are used for the manufacture of ammonium salts (particularly ammonium s phate) and purified and concentrated aqueous solutions of ammonia gas. B 7' (4) Spent oxide. After the water-extraction of the greater part of its ammonia content, cod gas is chemically purified by passing it through a mass usual1 composed of bog iron ore or of hydrated iron(III)oxide, sawdust and calcium sulphate. his mass removes from the gas certain impurities (h drogen sulphide, hydrocyanic acid, etc.). When spent, it contains a mixture of sulphur, Srussian blue, a small quantity of ammonium salts and other substances, and is known as spent oxide. It is usually in the form of powder or granules, greenish to brownish in colour, with a disagreeable odour, and is mainly used as a source of sulphur and cyanides (particularly Prussian blue) and as a ferhliser or an insecticide. f (5) Residues from the processin of power lant combustion off-gases b so called sum flue gas desu phurisation (I? G FGD). These residues are sogd or in the form of a s urry and can be further processed and used as a substitute for natural gypsum in limestone plasterboard manufacture. However, purified calcium sulphate isolated from these residues, is excluded (heading 28.33). f F' (B) MUNICIPAL WASTE This headin also covers municipal waste of a kind collected from households, hotels, restaurants, %os itals, shops, offices, etc., and road and pavement sweepings, as well as construction an demolition waste. Murucipal 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. X Individual materials or articles segregated from the waste (such as wastes of plastics, rubber, wood, paper, textiles, glass or metals and spent batteries) and industrial waste are excluded and fall in their appropriate headings of the Nomenclature. (For industrial wastes from chemical or allied industries, see Part (D) below). Such waste materials or articles collected separately should also be classified in their appropriate headings. (C) SEWAGE SLUDGE Sewage sludge is sludge arising from urban effluent treatment plant and includes pre-treatment waste, scourings and unstabilised sludge. The heading does not include stabilised sewage sludge when suitable for use as fertiliser (Cha ter 31). However, those containing other materials harmful to agriculture (e.g., heavy meta!Is), which make the stabilised sludge unfit for use as fertiliser, remain classified in this heading. (D) OTHER WASTES SPECIFIED IN NOTE 6 TO THIS CHAPTER The headin also covers a wide variety of other wastes specified in Note (6) to this Chapter. They inclu e : f (1) Clinical waste which is contaminated waste arising from medical research, diagnosis, treatment or other medical, surgical, dental or vetennary procedures. Such waste often contains pathogens, pharmaceutical substances and body fluids and requires special disposal procedures (e.g., soiled dressings, used gloves and used syringes). (2) Waste organic solvents generally derived from cleaning and washing processes and containing mainly or anic solvents, not fit for fi.uther use as presented as primary products, whether or not inten ed for recovery of the soIvents. 'f Wastes containing mainly petroleum oils or oils obtained from bituminous minerals are excluded (heading 27.10). (3) Wastes of metal pickling liquors, hydraulic fluids, brake fluids and anti-freezing fluids not fit for firrther use as presented as primary products. They are generally used for recovery of the primary products. However, the heading excludes ash and residues fiom waste of metal pickling liquors of a kind used for the recovery of metals or metal compounds (heading 26.20) and wastes of hydraulic fluids and brake fluids containing mainly petroleum 011s or oils obtained from bituminous minerals (heading 27.10). (4) Other wastes from the chemical or allied industries. This group includes, inter aha, wastes resulting from the production, formulation and use of inks, dyes, pigments, paints, lac uers and varnishes, other than municipal waste and waste organic solvents. T ey are generally heterogeneous mixtures which can vary from liquid or sernisolid dispersions in aqueous or non-aqueous media, exhibiting a mde range of viscosity. They are not fit for further use as presented as primary products. R However, the heading excludes slag, ash and residues from wastes resulting fiom the production, formulation and use of inks, dyes, pigments, aints, lac uers and varnishes, of a kind used for the recovery of metals or their compounds (hea&ng 26.203 and wastes containing mainly petroleum oils or oils obtained fiom bituminous minerals (heading 27.10). The heading also excludes : (a) Slag, ash and residues containin metals, arsenic or their mixtures, of a kind used in industry for the recovery of arsenic or metals or or the manufacture of their compounds (heading 26.20). F (b) Ash and residues eom the incineration of municipal waste (heading 26.21). (c) Terpenic by-products of the deterpenation of essential oils (heading 33.01). (d) Residual lyes fiom the manufacture of wood pulp (heading 38.04).
1.- This Chapter does not cover : (a) Separate chemically defined elements or compounds with the exception of the following : (1) Artificial graphite (heading 38.01); (2) Insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and plant-growth regulators, disinfectants and similar products, put up as described in heading 38.08; (3) Products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades (heading 38.13); (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 21.06); (c) Products of heading 24.04; (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 26.20); (e) Medicaments (heading 30.03 or 30.04); 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 26.20), spent catalysts of a kind used principally for the recovery of precious metal (heading 71.12) 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 38.22, 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 38.22 shall take precedence over any other heading in the Nomenclature. 3.- Heading 38.24 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 96.12), 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;