Harmonized System

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Section X > Chapter 47 > Heading 4704

Explanatory notes

… “sulphite” chemicals, such as calcium bisulphite (calcium hydrogen sulphite), magnesium bisulphite (magnesium hydrogen sulphite), sodium bisulphite (sodium hydrogen sulphite), ammonium bisulphite (ammonium hydrogen

Section XVI > Chapter 84 > Heading 8401

Explanatory notes

… (e.g., beryllium, graphite, water, heavy water, certain hydrocarbons such as diphenyl or terphenyls). (3) The … a molten sodium-potassium mixture, molten salts, certain hydrocarbons, etc., are frequently used for this purpose). …

Section VI > Chapter 29 > Heading 2926

Explanatory notes

… (dicyandiamide)* . Pure white crystals. (3)   Acetaldehyde cyanohydrin . (4)   Acetonitrile . (5)   Adiponitrile . … . (7)   Benzonitrile . (8)   Acetone cyanohydrin . (9)   Cyanoacetamide . (10) Cyanopinacoline . (11) Hydroxyphenylacetonitrile . (12) Iminodiacetonitrile . (13) …

Section VI > Chapter 28 > Heading 2805

Explanatory notes

… They decompose cold water; they deteriorate in air, forming hydroxides. (1) Lithium . This is the lightest (specific … of copper or steel, the manufacture of zirconium, calcium hydride (hydrolith), anti‑friction alloys, etc. (2)   …

Section X > Chapter 47 > Heading 4702

Explanatory notes

… is removed. The chemicals usually employed are sodium hydroxide (“soda” process), a mixture of sodium hydroxide and sodium sulphate, which is converted partly … bisulphite or magnesium bisulphite, also known as calcium hydrogen sulphite or magnesium hydrogen sulphite …

Section VI > Chapter 28 > Heading 2807

Explanatory notes

… or seleniferous products, lead sulphate) by treatment with hydrogen sulphide or ammonium sulphide. Sulphuric acid is a … chemistry (preparation of naphthalenesulphonic acid, hydroxyanthraquinone, thioindigo, alizarin derivatives, … 28.06 and 28.08 , respectively). (b)   Sulphur trioxide, hydrogen sulphide, peroxosulphuric (persulphuric) acids, …

Section VI > Chapter 38 > Heading 3816

Explanatory notes

… of this heading also contain non-refractory binders such as hydraulic binding agents. The heading also covers refractory … or temperature at which the mix will be used, different non-hydraulic binding agents (e.g., tar, pitch, resins) are … concretes consisting of mixtures of heat‑resistant hydraulic cements (e.g., aluminous cements) and refractory …

Section V > Chapter 27 > Heading 2714

Explanatory notes

… solid or very viscous mixtures of naturally occurring hydrocarbons with inert mineral matter, which in the case of … of heading 27.14.  Further, the heading also includes dehydrated and pulverized natural bitumen dispersed in water … This subheading covers sedimentary rock or sand containing hydrocarbons, which can be separated in the form of products …

Section VI > Chapter 32 > Heading 3202

Explanatory notes

… cresol- or naphthalenesulphonic acids; sulphonated aromatic hydrocarbons of high molecular weight; polysulphonamides and polyhydroxy-polyarylsulphone-sulphonic acids.       (2)   …