Harmonized System

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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 … The cofactor may be either a metal ion (e.g., copper in ascorbate oxidase, zinc in human placental alkaline phosphatase) or a complex organic molecule called a coenzyme …

Section XIII > Chapter 70 > Heading 7019

Explanatory notes

… - Slivers, rovings, yarn and chopped strands and mats thereof : 7019.11 - - Chopped strands, of a length of … - - Closed woven fabrics, plain weave, of yarns, not coated or laminated 7019.64 - - Closed woven fabrics, plain …

Section VI > Chapter 28 > Heading 2811

Explanatory notes

… fluoride (HF). Obtained by the action of sulphuric acid on natural calcium fluoride (fluorite) or on cryolite. It is … liquid (boiling point 18/20 °C); it fumes in a humid atmosphere. In the anhydrous state and in concentrated … or less highly concentrated, gives various hydrates. It attacks the skin. Used in analyses. (C) COMPOUNDS OF BROMINE …

Section VI > Chapter 29 > Heading 2921

Explanatory notes

… compounds (+)*. - Acyclic monoamines and their derivatives; salts thereof : 2921.11 - - Methylamine, di- or … from ammonia by replacing one, two or three hydrogen atoms by one, two or three alkyl or aryl radicals R (methyl, …

Section XVI > Chapter 85 > Heading 8549

Explanatory notes

… (+).            - Waste and scrap of primary cells, primary batteries and electric accumulators; spent primary cells, … electric accumulators, mercury-switches, glass from cathode ray tubes or other activated glass, or electrical or …

Section XVI > Chapter 84 > Heading 8434

Explanatory notes

… whether for farm or industrial purposes, used in the treatment of milk or for converting it into other dairy … lid of the milk pail, acts on the teat‑cups by alternating atmospheric pressure with a comparative vacuum between the …

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… (a)  Sodium sulphide (Na 2 S). Prepared by reducing sodium sulphate by means of coal. Either anhydrous, in whitish masses or plates (concentrated or melted sulphide), soluble in water, sulphating in the air, or in hydrated crystals (with …

Section VI > Chapter 29 > Heading 2901

Explanatory notes

… Sub-Chapter I HYDROCARBONS AND THEIR HALOGENATED, SULPHONATED, NITRATED OR NITROSATED DERIVATIVES 29.01 … oils. The basic hydrocarbon is methane (CH 4 ) with one atom of carbon. Methane and also propane (C 3 H 8 ) with three atoms of carbon are, however, classified in heading 27.11 …

Section XVI > Chapter 85 > Heading 8518

Explanatory notes

… audio‑frequency electric amplifiers of all kinds presented separately, regardless of the particular purpose for which such apparatus may be designed (e.g., telephone microphones, …

Section VI > Chapter 28 > Heading 2812

Explanatory notes

… halide oxides, and sulphides of metals (see the General Explanatory Note to sub‑Chapter I) or of the ammonium ion … with an irritating odour, lachrymatory. Fumes in a humid atmosphere and decomposes on contact with water. Mainly used … white fumes (hydrogen chloride (HCl)) in the presence of atmospheric moisture. Decomposes in water with formation of …

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