Harmonized System

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Section VI > Chapter 35 > Heading 3507

Explanatory notes

… in their chemical structure. Enzymes may be referred to as follows : (I)    According to their chemical … The cofactor may be either a metal ion (e.g., copper in ascorbate oxidase, zinc in human placental alkaline … mould cultures, mainly of the genus Rhizopus or the genus Aspergillus .       Although their liquefying power is …

Section XVIII > Chapter 90 > Heading 9018

Explanatory notes

… parameters) : 9018.11 - - Electro‑cardiographs 9018.12 - - Ultrasonic scanning apparatus 9018.13 - - Magnetic resonance … (to measure blood pressure). (4) Spirometers (to assess lung capacity). (5) Cephalometers . (6) Pelvimeters . …

Section VI > Chapter 38 > Heading 3824

Explanatory notes

… MOULDS OR CORES The heading covers foundry core binders based on natural resinous products (e.g., rosin), linseed oil, vegetable mucilages, dextrin, molasses, polymers of Chapter 39, etc. These are preparations … and to facilitate the removal of the sand after the piece has been cast. However, dextrins and other modified starches, …

Section VI > Chapter 28 > Heading 2841

Explanatory notes

… - Manganites, manganates and permanganates : 2841.61 ‑ ‑ Potassium permanganate 2841.69 ‑ ‑ Other 2841.70 ‑ … is used in painting under the name of siderine yellow. Associated with Prussian blue it gives greens imitating zinc …

Section VI > Chapter 28 > Heading 2833

Explanatory notes

… which, even pure, falls in heading 31.02 or  31.05 and potassium sulphate, which, whether or not pure, falls in … Natural sodium sulphates (glauberite, bloedite, reussin, astrakhanite) are excluded ( heading 25.30 ). (b) Sodium …

Section VI > Chapter 28 > Heading 2801

Explanatory notes

… GENERAL Chemical elements can be divided into two classes, non‑metals and metals. In general, this sub‑Chapter … (28.04). Arsenic............... As 33 Non‑metal (28.04). Astatine............. At 85 Radioactive element (28.44). …

Section VI > Chapter 28 > Heading 2842

Explanatory notes

… caps or detonators.  (2)     Cyanates. Ammonium, sodium or potassium cyanates are used for manufacturing various organic … poisonous. Examples are : (1)     Sodium arsenite (NaAsO 2 ). Prepared by the fusion of sodium carbonate with …

Section VI > Chapter 28 > Heading 2811

Explanatory notes

… or on cryolite. It is purified by treatment with potassium carbonate or by distillation (it sometimes contains … flasks. Its uses include etching on glass, manufacturing ashless filter paper, preparation of tantalum, of fluorides, … A white solid in needle‑shaped crystals somewhat similar to asbestos in appearance. Fumes in damp air; absorbs and …

Section VI > Chapter 28 > Heading 2827

Explanatory notes

… and bromide oxides : 2827.51 ‑ ‑ Bromides of sodium or of potassium 2827.59 ‑ ‑ Other 2827.60 ‑ Iodides and iodide oxides … calamine) (heading 26.08); or it can be extracted from the ashes and residues classified in heading 26.20. White …

Section XVI > Chapter 85 > Heading 8542

Explanatory notes

… Electronic integrated circuits are devices having a high passive and active element or component density, which are … (doped silicon, for example) and are therefore inseparably associated. Monolithic integrated circuits may be digital, …

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