Harmonized System

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Section XV > Chapter 74 > Heading 7406

Explanatory notes

… base metal powders (e.g., “bronze powder” consisting of a simple mixture of copper and tin powders). Copper powders … manufacture determines such characteristics as the particle size and shape (which may be more or less irregular, … their preparation. The powders are used for compacting and sintering into bearings, bushings and many other technical …

Section VI > Chapter 29 > Heading 2920

Explanatory notes

… have the general structure P(OR) 3 which can be considered as esters of phosphorous acid, H 3 PO 3 . Methyl … ethyl chloroformate) is excluded ( heading 29.15 ). (F)   Silicic acid esters and their salts (tetraethyl silicate, etc.)* . This heading does not cover alcoholates …

Section VI > Chapter 29 > Heading 2907

Explanatory notes

… OH). Obtained by fractional distillation of coal tars or by synthesis. White crystals, with a characteristic odour, … it has the odour of phenol.        To fall in this heading, single or mixed cresols must contain 95 % or more by weight … ) 2 C 6 H 3 OH ) . These are phenol derivatives of xylene. Six isomers are known; they are obtained from coal tar oils. …

Section VI > Chapter 32 > Heading 3212

Explanatory notes

… OF PAINTS (INCLUDING ENAMELS) These are concentrated dispersions of pigments (including aluminium or other metal … The heading does not cover  : (a)   Artists’, students’ or signboard painters’ colours, modifying tints, amusement … and the like, in tablets, tubes, jars, bottles, pans or in similar forms or packings ( heading 32.13 ). (b)   Printing …

Section VII > Chapter 40 > Heading 4012

Explanatory notes

… of pneumatic tyre carcasses and generally have ribbed tread design.  They are used for retreading pneumatic tyres.  This … of the tread with new material extending over part of the sidewall) or bead-to-bead retreading (replacement of the …

Section VI > Chapter 29 > Heading 2921

Explanatory notes

… tanning industry, etc. (2) Dimethylamine ((CH 3 ) 2 NH), similar to methylamine; used in organic synthesis, as a … accelerator. (3) Trimethylamine ((CH 3 ) 3 N), similar to methylamine; used in organic synthesis. (4) …

Section VI > Chapter 28 > Heading 2809

Explanatory notes

… phosphorus extracted from natural phosphates. It is a very corrosive white powder, absorbs water avidly, and is … packings. It is used for drying gases, and in organic synthesis. Diphosphorus pentaoxide exists in crystalline, … three varieties mixed together give “phosphoric snow”, classified here. (B) PHOSPHORIC ACID Phosphoric acid …

Section VI > Chapter 28 > Heading 2818

Explanatory notes

… OR NOT CHEMICALLY DEFINED Artificial corundum is formed by fusing aluminium oxide in an electric furnace. The aluminium … of refractory conglomerates (such as mullite and sillimanite, mixtures of corundum with pure refractory clay and with anhydrous aluminium silicates, respectively) or of laboratory utensils and in …

Section X > Chapter 48 > Heading 4805

Explanatory notes

… as manufactured in the form of rolls or sheets (for dimensions, see Note 8 to this Chapter), other than those … paper and paperboard which are products obtained by pressing together two or more layers of moist pulps of which … fibres obtained by a mechanical or semi‑chemical process, unsized and designed to remove solid particles from liquids or …

Section VII > Chapter 39 > Heading 3913

Explanatory notes

… animal or microbial origin. They are suitable for processing into plastics. The heading covers all proteins … of paints and varnishes which after application form a film resistant to atmospheric and chemical deterioration. (b) …