Harmonized System

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Section VII > Chapter 39 > Heading 3910

Explanatory notes

… silicon atoms by direct silicon‑carbon bonds. They have a high stability and may be either liquid, semi‑liquid or … oils and greases are used as lubricants remaining stable at high or low temperatures, as water‑repellent impregnating … insulating or waterproof coatings, etc., where stability at high temperature is required. They are also used in the …

Section VI > Chapter 28 > Heading 2819

Explanatory notes

… agent in organic chemistry (manufacture of isatin, indigo dyes, etc.); also used in medicine and, when mixed … specific gravity about 5. The pure oxide is used as a pigment known as “chromium oxide green”, not to be confused … under the name of “chrome green” or in the manufacture of Guignet’s green. There is also a violet chromium hydroxide. …

Section VII > Chapter 39 > Heading 3903

Explanatory notes

… It is extensively used as a thermal insulent for refrigerator doors, air‑conditioner housings, cold storage … 39.14 ). Styrene‑acrylonitrile (SAN) copolymers, which have high tensile strength, good mouldability and chemical … are used for making cups, tumblers, typewriter keys, refrigerator parts, oil‑filter bowls and certain kitchen …

Section XV > Chapter 74 > Heading 7405

Explanatory notes

… of this heading are alloys containing more than 10 % by weight of copper together with other elements, and which, … brass, bronze or aluminium bronze, other elements with a higher melting point than those alloys, or highly oxidisable elements (e.g., aluminium, cadmium, …

Section X > Chapter 48 > Heading 4804

Explanatory notes

… - - Other               ‑ Other kraft paper and paperboard weighing 150 g/m 2 or less : 4804.31 ‑ ‑ Unbleached 4804.39 … ‑ ‑ Other               ‑ Other kraft paper and paperboard weighing more than 150 g/m 2 but less than 225 g/m 2  : … throughout the mass and of which more than 95 % by weight of the total fibre content consists of wood fibres …

Section I > Chapter 4 > Heading 0405

Explanatory notes

… a milkfat content of 80 % or more but not more than 95 % by weight, a maximum milk solids-not-fat content of 2 % by weight and a maximum water content of 16 % by weight. Butter contains no added emulsifiers, but may …

Section VI > Chapter 28 > Heading 2805

Explanatory notes

… ALKALI METALS The five alkali metals are soft and rather light. They decompose cold water; they deteriorate in air, forming hydroxides. (1) Lithium . This is the lightest (specific gravity 0.54) and hardest of the group. … or yellowish metal (specific gravity 1.9), which ignites on contact with air; the most readily oxidising …

Section XV > Chapter 83 > Heading 8307

Explanatory notes

… the edge. Tubing of this type may be rendered water or gas tight by packing with rubber, asbestos, textiles, etc. It is then suitable for use as watertight protection for electric cables or flexible … The heading also covers flexible tubing composed of tightly spiralled wire (e.g., as used as sheathing for …

Section V > Chapter 25 > Heading 2516

Explanatory notes

… or building stone Granite is a very hard, granular igneous rock formed by the agglomeration of quartz crystals … oxide or manganese oxide. Porphyry is a finely grained, slightly translucent variety of granite. Sandstone is a rock of sedimentary origin composed of small quartzose or siliceous particles …

Section XIII > Chapter 70 > Heading 7018

Explanatory notes

… can be easily distinguished from real pearls through their lightness and the fact that they can be crushed under very light pressure.        Solid imitation pearls are obtained …