WCO Explanatory Notes reproduced for reference. © World Customs Organization. Verify against official WCO publication.
32.06 - than Other colouring matter; preparations as specified in Note 3 to this Chapter, other those of heading 32.03, 32.04 or 32.05; inorganic products of a kind used as luminophores, whether or not chemically defined (Jr). - Pigments and preparations based on titanium dioxide : 3206.1 1 - - Containing 80 % or more by weight of titanium dioxide calculated on the dry matter 3206.19 3206.20 - - Other - Pigments and preparations based on chromium compounds - Other colouring matter and other preparations : 3206.41 - - Ultramarine and preparations based thereon 3206.42 -- 3206.49 - - Other - Inorganic products of a kind used as lurninophores 3206.50 Lithopone and other pigments and preparations based on zinc sulphide (A) OTHER COLOURING MATTER; PREPARATIONS AS SPECIFIED IN NOTE 3 TO THIS CHAPTER, OTHER THAN THOSE OF HEADING 32.03,32.04 OR 32.05 This heading covers inorganic colouring matter or colouring matter of rnineraI origin. The heading excludes, however : (a) Natural micaceous iron oxides; earth colours, whether or not calcined or mixed together (see Explanatory Note to heading 25.30). (b) Separate chemically defined inorganic colouring matters (e .,basic lead carbonate; oxides of iron, lead, chromium or zinc; sulphides of zinc or mercury; leafchromate (Chapter 28)); Scbweinfurt green (copper acetoarsenite) (heading 29.42). (c) Metallic flakes and powders (Section XIV or XV). The colouring matter of this heading includes : (1) Pigments based on titanium dioxide. These include titanium dioxide which is surfacetreated or mixed with calcium or barium sulphate or other substances. These also include titanium dioxide to which compounds have been intentionally added during the production process in order to obtain certain hysical properties rendering it suitable for use as a pigment. Other specially produce titanium &oxide which is not suitable for use as a igment because of its particular properties falls under other headings (e.g., %eadings38.15, 38.24 . Titanium diox~dewhich is unmixed and not surface-treated is classified in heading 2 -23. i' $ (2) Pi ments based on chromium compounds. These include yellows consisting of mixtures of ead chromate and other inorganic products such as lead sulphate, and green pigments consisting of chromium oxide mxed wtth other substances. (3) Ultramarine. Ultramarine blue is a complex compound formerly obtained from lapis lazuli, but now prepared artificially by treating mixtures of various silicates, aluminates, sodium carbonate, sulphur, etc. Green, pink and violet ultramarines are also covered by this heading, but certam unmixed chromates, sometimes known as yellow ultramarine, are excluded (heading 28.41). (4) Lithopone and other pigments based on zinc sul hide, such as white pigments consisting of mixtures in varying proportions of zinc sulp ide and barium sulphate. (5) Pigments based on cadmium compounds, e.g., yellow pigments consisting of mixtures of cadmium sulphide and barium sulphate, and cadmium red consisting of a mixture of cadmium sulphide and cadmium selen~de. (6) Prussian blue (Berlin blue) and other pigments based on hexacyanoferrates (ferrocyanides and ferricyanides). Prussian blue consists of a ferric fmocyanide, not chemically defined. It is obtained by recipitating an alkali ferrocyanide with a ferrous salt and then oxidising with a hypoch?Iorite. It is an amorphous blue solid, used in the preparation of numerous pigments which are also classified in this heading. These include mineral blue (with barium sul hate and kaolin), milori green or En lish green (with chrome yellow and sometimes a so barium sulphate) and zinc green (wit73 zinc chromate), and compounds for coloured inks (with oxalic acid). Turnbull's blue consists of a ferrous ferricyamde, not chemically defined, alone or in mixtures. Y (7) Mineral blacks (other than the blacks included in heading 25.30 or 28.03), for example : (a) Shale black, a mixture of various silicates and carbon obtained by partial calcination of bituminous shales. (b) Silica black obtained by calcination of mixtures of coal and kieselguhr. (c) The product known as " alu black ", a mixture of aluminium oxide and carbon obtained by the calcination of a mixture of bauxite and coal tar pitch or grease. (8) Coloured earths brightened with very small quantities of synthetic organic dyestuffs. (Coloured earths, whether or not mixed together, but not brightened, generally fall xn heading 25.30 - see relative Explanatory Note.) (9) Soluble Vandyke brown and similar products generally obtained b treatment of the earth colours of heading 25.30 (Vandyke brown, Cologne earth or assel earth, etc.) with ammonia or potasslum hydroxide solutions. (10) Pigments based on cobalt compounds, e-g., cerulean blue. (1 1) Pigments consisting of finely ground ores, e.g., ilmenite. (12) Zinc grey (very impure zinc oxide). (13) Synthetic nacreous (pearl) pigments, i.e., inorganic pearlescent pigments, such as : (a) bismuth chloride oxide, with the addition of a small quantity of an organic surfaceactive agent; (b) mica coated with bismuth chloride oxide, titanium dioxide or titanium dioxide and ferric oxide. These products are used in the manufacture of various cosmetic preparations. Inorganic pigments with added organic colouring matter are also classified in this heading. These products are primary materials used principally for the manufacture of the colours or pigments for the ceramic industries (see the Ex lanatory Note to heading 32.07), the colours, paints, enamels and lacquers of headings 32. 8 to 32.10 and 32.12, artists', students' or amusement colours of heading 32.13 and printing inks (classified in heading 32.15). This heading fiuther includes reparations based on the colouring matters referred to above, and also the colouring pi ments o heading 25.30 or of Chapter 28 and metallic flakes and powders, of a kind used for co ouring any material or used as ingredients in the manufacture of colouring preparations in the form of : f P (I> Concentrated dispersions in plastics, natural rubber, s thetic rubbers, lasticisers or other media. These dispersions are used as raw materia s for colouring p astics, rubber, etc., in the mass. or (II) Mixtures with relative1 large quantities of surface-active products or with organic binders. These are use for colouring in the mass plastics, etc., or as ingredients in preparations for printing textiles. They are normally in the form of pastes. P P l However, the preparations referred to in the last sentence of Note 3 to this Chapter are excluded. The heading also excludes : Products of a kind used as extenders in oil paints, whether or not also suitable for colouring distempers, for example : (a) Kaolin (heading 25.07). (b) Calcium carbonate (heading 25.09 or 28.36). (c) Barium sulphate (heading 25.11 or 28.33). (d) Diatomaceous earth (heading 25.12). (e) Slate (heading 25.14). (f) Dolomite (heading 25.18). (g) Magnesium carbonate (heading 25.19 or 28.36). [) Gypsum (heading 25.20). (ij) Asbestos (heading 25.24). Q Mica (heading 25.25). (1) Talc (heading 25.26). (m) Calcite (Iceland spar) (heading 25.30). (n) Aluminium hydroxide (heading 28.18). (0) Mixtures of two or more of the products mentioned in (a) to (n) above (usually heading 38.24). (B) INORGANIC PRODUCTS OF A KIND USED AS LUMINOPHORES, WHETHER OR NOT CHEMICALLY DEJ?INED Inor anic products of a kind used as lurninophores are products which, under the action of visib e or invisible radiations (solar rays, ultra-violet rays, cathode rays, X-rays, etc.), produce a luminescent effect (fluorescent or phosphorescent). Most of these products consist of metal salts activated by the presence in very small quantities of " activating " products such as silver, copper or manganese. For example, zinc sul h~de activated by silver or copper, zinc sulphate activated by copper, and zinc-beryllium siyicate activated by manganese. Others are metal salts which owe their luminescent properties not to the presence of activatin agents but to a treatment giving them a very special c stalline structure. These roducts, whic are chemically defined compounds and contain no o er substances, include ca cium tungstate and magnesium tungstate. The same chemicals in a non-luminescent form e.g., less pure, different crystalline structure) are excluded (Chapter 28). Thus " amorp ous " calcium tungstate used as a reagent falls in heading 28.41. tX E Inorganic products of a kind used as lurninophores sometimes contain traces of added radioactive salts which render them self-luminescent. They must be considered as mixtures containing radioactive substances and classified in heading 28.44 if the level of radioactivity exceeds 74 Bqlg (0.002 pCiJg). Inorganic products of a kind used as lumino hores mixed together (e.g., zinc sulphide activated by copper mixed with zinc-cadmium sulphi e activated by copper) or with inorganic colouring pigments (of Chapter 28 or Part (A) above) remain classified in this heading. i Lunjnophores .are used in .the preparation of luminous paints and for coating screens for television, oscillograph, radiography, radioscopy or radar apparatus, or fluorescent lighting tubes. The heading does not cover roducts answering to descriptions in headin s 28.43 to 28.46 and 28.52 (e.g., a mixture of yttrium oxiBe and europium oxide), however put up and wfiatever their intended use.
Notes. 1.- This Chapter does not cover : (a) Separate chemically defined elements or compounds (except those of heading 32.03 or 32.04, inorganic products of a kind used as luminophores (heading 32.06), glass obtained from fused quartz or other fused silica in the forms provided for in heading 32.07, and also dyes and other colouring matter put up in forms or packings for retail sale, of heading 32.12); (b) Tannates or other tannin derivatives of products of headings 29.36 to 29.39, 29.41 or 35.01 to 35.04; or (c) Mastics of asphalt or other bituminous mastics (heading 27.15). 2.- Heading 32.04 includes mixtures of stabilised diazonium salts and couplers for the production of azo dyes. 3.- Headings 32.03, 32.04, 32.05 and 32.06 apply also to preparations based on colouring matter (including, in the case of heading 32.06, colouring pigments of heading 25.30 or Chapter 28, metal flakes and metal powders), of a kind used for colouring any material or used as ingredients in the manufacture of colouring preparations. The headings do not apply, however, to pigments dispersed in non-aqueous media, in liquid or paste form, of a kind used in the manufacture of paints, including enamels (heading 32.12), or to other preparations of heading 32.07, 32.08, 32.09, 32.10, 32.12, 32.13 or 32.15. 4.- Heading 32.08 includes solutions (other than collodions) consisting of any of the products specified in headings 39.01 to 39.13 in volatile organic solvents when the weight of the solvent exceeds 50 % of the weight of the solution. 5.- The expression “colouring matter” in this Chapter does not include products of a kind used as extenders in oil paints, whether or not they are also suitable for colouring distempers. 6.- The expression “stamping foils” in heading 32.12 applies only to thin sheets of a kind used for printing, for example, book covers or hat bands, and consisting of : (a) Metallic powder (including powder of precious metal) or pigment, agglomerated with glue, gelatin or other binder; or (b) Metal (including precious metal) or pigment, deposited on a supporting sheet of any material.