Harmonized System

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Section VI > Chapter 28 > Heading 2808

Explanatory notes

… by oxidising ammonia in the presence of a catalyst (platinum, iron, chromium, bismuth or manganese oxides, etc.). Alternatively, … by the action of sulphuric acid (alone or associated with sodium disulphate) on natural sodium nitrate; the impurities …

Section XVI > Chapter 84 > Heading 8434

Explanatory notes

… connected, by means of flexible tubing, on one side to a vacuum pump unit via a pulsator and on the other to a milk … the various components are usually separate.  A variable number of milking pails may be connected to the vacuum pump …

Section XVI > Chapter 84 > Heading 8419

Explanatory notes

… as the case may be). (h)   Refrigerating machinery and heat pumps of heading 84.18 . (ij)   Germination plant, … at reduced or increased pressure may be fitted with vacuum pumps or compressors. Batch stills are mainly used for the …

Section VI > Chapter 32 > Heading 3205

Explanatory notes

… or not soluble in water), on a base, generally mineral (barium sulphate, calcium sulphate, aluminium oxide, China clay, talc, silica, siliceous fossil …

Section VI > Chapter 36 > Heading 3601

Explanatory notes

… are mixtures, the combustion of which produces a large volume of hot gases. These gases generate a propellent …         Black powder consists of an intimate mixture of potassium nitrate or sodium nitrate, sulphur and charcoal.         This powder, …

Section XVIII > Chapter 91 > Heading 9114

Explanatory notes

… for example, in toys, meters or measuring or precision instruments (springs, trains, jewels, hands, etc.) fall in … of this heading may be unpolished, polished, nickel‑plated, rhodium‑plated, silvered, gilded, varnished, etc., or …

Section II > Chapter 14 > Heading 1404

Explanatory notes

… compressed).         The more important are : (1) Wood  : Sumach, fustic (including the so‑called “young fustic”), … Lichen tartareus and Lichen parellus , pustulous lichen or Umbilicaria pustulata ).           The heading excludes  : …

Section XVIII > Chapter 90 > Heading 9022

Section VI > Chapter 29 > Heading 2901

Explanatory notes

… occur abundantly in nature and are the main components of petroleum oils. The basic hydrocarbon is methane (CH 4 ) … this heading, ethane must have a purity of 95 % or more by volume. Ethane of lower purity is excluded ( heading 27.11 … atoms of carbon are liquid; hydrocarbons with a greater number of carbon atoms are generally solid. One or more of …

Section VI > Chapter 32 > Heading 3214

Explanatory notes

… damar, rosin) or plastics (alkyd resins, polyesters, coumarone-indene resins, etc.), intermixed and usually with the addition of other materials (e.g., waxes, oils, bitumens, rubber, brick powder, lime, cements or any other … components. One of these consists of an aqueous solution of sodium silicate and potassium-sodium silicate and the other …