Harmonized System

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Section VII > Chapter 40 > Heading 4001

Explanatory notes

… is the liquid secreted principally by rubber trees and, in particular, by the species Hevea brasiliensis . This liquid consists of an aqueous solution of organic and mineral substances (proteins, fatty … be altered at will, by varying the temperature, the heating time or the proportions of the ingredients used. Normally, …

Section XVIII > Chapter 90 > Heading 9031

Explanatory notes

… parts 9031.20 ‑ Test benches               - Other optical instruments and appliances : 9031.41 - - For inspecting semiconductor wafers or devices (including … etc.).        Static balancing machines operate on the tilting principle, the out‑of‑balance being measured on …

Section VI > Chapter 29 > Heading 2933

Explanatory notes

… not hydrogenated) in the structure : 2933.11 - - Phenazone (antipyrin) and its derivatives 2933.19 - - Other               - Compounds … structure. This part includes, inter alia  : (1) Phenazone (antipyrin, dimethylphenylpyrazolone) * . Crystalline powder …

Section VI > Chapter 28 > Heading 2841

Explanatory notes

… peroxometallic acids (corresponding to metal oxides which constitute anhydrides). The main groups of compounds covered by this heading are : (1)   Aluminates . Derivatives of aluminium hydroxide. (a)  Sodium aluminate . … the metallurgy of molybdenum. Hydrated crystals, slightly tinted with green or yellow and decomposed by heat. Used as …

Section VI > Chapter 28 > Heading 2827

Explanatory notes

… the pickling of metals, in the textile dyeing or printing industry, in tanning, as a fertiliser, in the … or rat‑poison, for purifying industrial water, etc. (11) Titanium chlorides . The most important is titanium …

Section XVI > Chapter 84 > Heading 8412

Explanatory notes

… 84.12 - Other engines and motors. 8412.10 - Reaction engines other than turbo-jets               - Hydraulic power engines and motors : 8412.21 - - Linear acting (cylinders) 8412.29 - - Other               - … rotor with two semi-cylindrical bladings) or of the tides. (2)    Water column machines operating by the …

Section VI > Chapter 35 > Heading 3507

Explanatory notes

… by living cells; they have the property of causing and regulating specific chemical reactions inside or outside living cells, without themselves … referred to as follows : (I)    According to their chemical constitution, e.g.  : (a)  Enzymes in which the molecule …

Section XVIII > Chapter 90 > Heading 9015

Explanatory notes

… but they are also used for other purposes (e.g., study of tides, ground‑swells, etc.). The maps, etc., are plotted … (1)   Seismometers and seismographs , for recording the time, duration and intensity of movements of a point on the …

Section XVI > Chapter 84 > Heading 8421

Explanatory notes

… than water 8421.23 ‑ ‑ Oil or petrol‑filters for internal combustion engines 8421.29 ‑ ‑ Other               ‑ … air filters for internal combustion engines 8421.32 ‑ ‑ Catalytic converters or particulate filters, whether or not combined, for purifying …

Section VI > Chapter 28 > Heading 2811

Explanatory notes

… OF FLUORINE (1) Hydrogen fluoride (HF). Obtained by the action of sulphuric acid on natural calcium fluoride … with potassium carbonate or by distillation (it sometimes contains small quantities of silicates and of … pieces, in organic synthesis, or as a control in fermenting processes. (2) Fluoroacids . These include : (a) …

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