Harmonized System

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Section VI > Chapter 28 > Heading 2850

Explanatory notes

… Non‑metal nitrides . Boron nitride (BN) is a light white powder, highly refractory. A heat and electricity insulator; … crucibles. Silicon nitride (Si 3 N 4 ) is a greyish‑white powder. (2)   Metal nitrides . Aluminium, titanium, … from sodium azide and lead acetate. White crystalline powder, very sensitive to shock, preserved under water. Used …

Section VI > Chapter 28 > Heading 2834

Explanatory notes

… of calcium oxide and potassium nitrate. A white crystalline powder or in yellowish sticks; often containing other salts … crystals, in vitreous masses or as a white crystalline powder, soluble in water and hygroscopic when impure. Similar uses to sodium nitrate; also for preparing gunpowder, chemical primers, fireworks, matches and …

Section VI > Chapter 32 > Heading 3214

Explanatory notes

… or cure after application. However, some are in solid or powder forms which are made pasty at the time of use by … other materials (e.g., waxes, oils, bitumens, rubber, brick powder, lime, cements or any other mineral fillers). It … potassium-sodium silicate and the other of fillers (quartz powder, sand, asbestos fibres, etc.). They are mainly used …

Section VI > Chapter 29 > Heading 2908

Explanatory notes

… acid), brilliant transparent flakes or yellowish-white powder. (b) 2-Naphthol-6-sulphonic acid (Schaeffer acid), a pinkish-white powder. (c)  2-Naphthol-7-sulphonic acid (F acid), white … (HOC 6 H 3 (NO 2 ) 2 ). These are crystalline powders; used for the preparation of explosives, sulphur …

Section VI > Chapter 29 > Heading 2939

Section VI > Chapter 33 > Heading 3304

Explanatory notes

… pedicure preparations               - Other : 3304.91 - - Powders, whether or not compressed 3304.99 - - Other (A) …

Section VI > Chapter 34 > Heading 3401

Section VI > Chapter 28 > Heading 2830

Explanatory notes

… alkali zincate by means of sodium sulphide. White paste or powder often containing zinc oxide or other impurities. It … with a tin oxide or amalgam. Golden yellow flakes or powder, insoluble in water and subliming when heated. Used … in sodium hydroxide gives a red or orange‑coloured powder (precipitated trisulphide). Used either alone or …

Section VI > Chapter 28 > Heading 2816

Explanatory notes

… AND PEROXIDE (1)   Magnesium hydroxide (Mg(OH) 2 ). White powder, heavier than magnesium oxide; stable but forming the … action of hydrogen peroxide on magnesium hydroxide. White powder, containing oxide as impurity; almost insoluble in … precipitated strontium carbonate. Porous white, hygroscopic powder, soluble in water. Forms the carbonate when exposed …

Section XV > Chapter 81 > Heading 8112

Explanatory notes

… scrap..               ‑ Beryllium : 8112.12 ‑ ‑ Unwrought; powders 8112.13 ‑ ‑ Waste and scrap 8112.19 ‑ ‑ Other               ‑ Chromium : 8112.21 ‑ ‑ Unwrought; powders 8112.22 ‑ ‑ Waste and scrap 8112.29 ‑ ‑ Other … ‑ Hafnium : 8112.31 ‑ ‑ Unwrought; waste and scrap; powders 8112.39 ‑ ‑ Other              ‑ Rhenium : 8112.41 ‑ …

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