Harmonized System

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Section XV > Chapter 76

Section VI > Chapter 28 > Heading 2805

Explanatory notes

… alkali metals are soft and rather light. They decompose cold water; they deteriorate in air, forming hydroxides. (1) … cutting. It is preserved in mineral oil or in airtight welded tins. Sodium is obtained by electrolysing molten … The three alkaline‑earth metals are malleable and decompose cold water fairly readily; they deteriorate in damp air. …

Section VI > Chapter 29 > Heading 2911

Explanatory notes

… as di-ethers of (normally hypothetical) hydrates of aldehydes and ketones. Hemiacetals are mono-ethers in which … (OCH 3 ) 2 ). Dimethyl ether of the hypothetical hydrate of formaldehyde. Colourless liquid with an ether-like odour; … 3 ) 2 ). Dimethyl ether of the hypothetical hydrate of acetaldehyde; used as an anaesthetic. (3)   Diethylacetal …

Section XVIII > Chapter 90 > Heading 9006

Explanatory notes

… of a light‑tight chamber, a lens, a shutter, a diaphragm, a holder for a photographic plate or film, and a viewfinder. … as : (A)  Box cameras ; these are the simplest type. (B)  Folding or collapsible cameras , for studio or amateur use. … lens mounted on a board and the rear panel contains a film holder. The bellows connects the lens board to the film …

Section XIII > Chapter 69 > Heading 6905

Explanatory notes

… which, like bricks, are used in constructional or building work. It includes : (1)   Roofing tiles (for roofs, … usually provided with nibs, holed for nailing, or may be moulded to interlock, and in this respect differ from the … flue-blocks, etc. (3)   Architectural ornaments for use on buildings, walls, gates, etc. (e.g., cornices and friezes); …

Section XI > Chapter 63 > Heading 6308

Explanatory notes

… used in the manufacture of needleworked tapestries; it should be noted, however, that the woven fabric should nevertheless retain the character of a raw material with regard to the work to be carried out and should never constitute an “article” in a state suitable for …

Section V > Chapter 25 > Heading 2505

Explanatory notes

… inter alia  : (1)   Silica sands and quartz sands, used in building, in the glass industry, for cleaning metals, etc. … including kaolinic sands, used mainly for preparing foundry moulds and refractory products. (3)   Feldspathic sands, used in the ceramic industry. Natural …

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… (salts of hydrogen sulphide (H 2 S) of heading 28.11). The old name “sulphydrates” (hydrosulphides) is sometimes … or greenish, according to their degree of purity. Mild reducing agent used in the preparation of organic … copper, etc., it gives a luminophore of heading 32.06 . It should, however, be noted that zinc sulphide is classified …

Section XVIII > Chapter 90 > Heading 9013

Explanatory notes

… telescopes in this heading and not in heading 90.05. It should, moreover, be noted that optical instruments and … classification is not specified in the Nomenclature, they should be classified with the machines or appliances having …

Section VI > Chapter 38 > Heading 3816

Explanatory notes

… basis of silica for the manufacture of dental or jewellery moulds by the lost wax process. This heading further … of crushed sintered dolomite.  Depending on the field of application or temperature at which the mix will be … known as refractory “plastics” , which are products sold as a dampened mass often consisting of a refractory …

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