Harmonized System

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Section VI > Chapter 28 > Heading 2826

Explanatory notes

… GENERAL Metal salts are obtained by replacing the hydrogen element in an acid by a metal or by the ammonium ion (NH 4 + … atoms are replaced by the metal, but acid salts still contain part of the hydrogen replaceable by metal; basic salts contain a greater quantity of basic oxide than is necessary to neutralise the …

Section VI > Chapter 29 > Heading 2932

Explanatory notes

… oxygen hetero-atom(s) only (+).               - Compounds containing an unfused furan ring (whether or not … hydrogenated) in the structure .        This part includes, inter alia  : (1)   Tetrahydrofuran . Colourless liquid. … in the purification of mineral oils, for the preparation of synthetic resins, as a solvent for cellulose nitrate and …

Section VI > Chapter 29 > Heading 2914

Explanatory notes

… oxygen function               ‑ Quinones : 2914.61 ‑ ‑ Anthraquinone 2914.62 ‑ ‑ Coenzyme Q10 (ubidecarenone (INN)) … other oxygen function” means ketones and quinones which contain also one or more of the oxygen functions referred to … etc., functions). (A) KETONES* These are compounds containing the group ( > C=O), so‑called “carbonyl” group, …

Section VI > Chapter 35 > Heading 3507

Explanatory notes

… not elsewhere specified or included. 3507.10 - Rennet and concentrates thereof 3507.90 - Other Enzymes are organic … metal ion (e.g., copper in ascorbate oxidase, zinc in human placental alkaline phosphatase) or a complex organic … These are generally in crystalline form, and are mainly intended for use in medicine or in scientific research. They …

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… Sodium sulphides 2830.90 ‑ Other Subject to the exclusions mentioned in the introduction of this sub‑Chapter, this heading covers metal … of coal. Either anhydrous, in whitish masses or plates (concentrated or melted sulphide), soluble in water, …

Section VI > Chapter 29 > Heading 2915

Explanatory notes

… GENERAL This sub-Chapter covers the carboxylic acids which contain the characteristic function (–COOH), called the … is removed, the residue is an acyl radical which can be represented by the formula (RCO–) where R is an alkyl or … aryl radical (methyl, ethyl, phenyl, etc.). Acyl radicals enter into the formulae of anhydrides, halides, peroxides, …

Section XVI > Chapter 85 > Heading 8517

Explanatory notes

… of speech or other sounds, images or other data between two points by variation of an electric current or optical wave flowing in a wired network or by … may be analogue or digital. The networks, which may be interconnected, include telephony, telegraphy, …

Section VI > Chapter 29 > Heading 2922

Explanatory notes

… (+).               - Amino-alcohols, other than those containing more than one kind of oxygen function, their … - Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their … amino-ketones and amino-quinones, other than those containing more than one kind of oxygen function; salts …

Section XVIII > Chapter 91 > Heading 9114

Explanatory notes

… headings of this Chapter (e.g., the complete and assembled movements of heading 91.08 or 91.09 , the movement sets, … parts which are not clearly clock or watch parts (e.g., printing or totalling devices for time‑registers, and …

Section XVI > Chapter 84 > Heading 8445

Explanatory notes

… reeling machines 8445.90 ‑ Other Subject to the exclusions mentioned later, this heading covers machines used in the … following processes : (I)   The preparation or preliminary treatment of textile fibres to make them suitable for : (i)  Spinning into yarns, twine, etc. or    (ii)  Manufacturing into …