Harmonized System

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Section VI > Chapter 38 > Heading 3801

Explanatory notes

… in an electric furnace by heating a mixture of finely ground coke (normally petroleum coke, but sometimes … silica or iron oxide). The mixture is first extruded or moulded under pressure into “green” blocks of square or … these blocks may either be pre‑fired (baked) at about 1000 °C and then graphitised, or they may be submitted …

Section VI > Chapter 29 > Heading 2906

Explanatory notes

… (2)   Cyclohexanol, methyl- and dimethylcyclohexanols are compounds with a characteristic odour like camphor. They are used as solvents for varnishes. … perhydro-1,2-cyclopentanophenanthrene, the hydroxyl group being linked to the 3-carbon, with a methyl group on …

Section VI > Chapter 28 > Heading 2825

Explanatory notes

… Also exists as the hydrate (NH 2 .NH 2 .H 2 O). Colourless, lachrymatory liquid which fumes in the air. A … classified here. The most important is hydrazine sulphate , colourless crystals which are slightly soluble in cold water …

Section VI > Chapter 38 > Heading 3807

Explanatory notes

… obtained during the distillation (or carbonisation) of resinous or non‑resinous wood. Apart from gases, these … vegetable pitch of all kinds, brewers’ pitch and similar compounds based on rosin, resin acids or on vegetable pitch. … The latter are obtained directly as a fraction settling out from the pyroligneous liquids (settled tars), or by …

Section XVI > Chapter 84 > Heading 8426

Explanatory notes

…               ‑ Other machinery : 8426.91 ‑ ‑ Designed for mounting on road vehicles 8426.99 ‑ ‑ Other The heading … certain exceptions referred to below concerning machines mounted on transport equipment of the type falling in … MACHINES Many machines, in addition to carrying out the functions described in this heading or …

Section VI > Chapter 29 > Heading 2905

Explanatory notes

… by replacing one or more atoms of hydrogen by the hydroxyl group. They are oxygenated compounds which react with acids giving the compounds known … The alcohols may be primary (containing the characteristic group –CH 2 OH), secondary (containing the characteristic …

Section XV > Chapter 72 > Heading 7207

Explanatory notes

… subjected to a rolling operation which has given them a rough appearance. The heading covers blooms, billets, rounds, slabs, sheet bars, pieces roughly shaped by forging, … A mould, without bottom, with its cooling devices; (b)   Outside the mould a system for atomising water in order to …

Section VI > Chapter 34 > Heading 3402

Explanatory notes

… organic surface-active agents of this heading are chemical compounds, not chemically defined, which contain one or more hydrophilic or hydrophobic functional groups in such a proportion that, when mixed with water at a concentration of 0.5 % at 20 °C and left to stand for one hour at the same temperature, they give a transparent or …

Section VI > Chapter 28 > Heading 2835

Explanatory notes

… Calcium phosphinate (hypophosphite) (Ca(PH 2 O 2 ) 2 ), colourless crystals or a white powder (obtained by the … (monobasic phosphate) (NaH 2 PO 4 .2H 2 O). Colourless crystals, soluble in water, which under the … orthophosphate (tribasic phosphate) (Na 3 PO 4 .12H 2 O). Colourless crystals, soluble in water, releasing part of …

Section XVIII > Chapter 92 > Heading 9206

Explanatory notes

… : (A) Those with a stretched skin , e.g. : (1) Tabors and tambourins . (2) Drums (shallow side drums, bass or big … cylinder with parchment or vellum stretched over each end (double‑headed drums). They are sounded by striking with one … as a substitute for conventional chimes. These have the outward appearance of a small piano with pedal and dampers. …