Harmonized System
Section VI > Chapter 29 > Heading 2909
… ether-phenols, ether-alcohol-phenols, alcohol peroxides, ether peroxides, acetal and hemiacetal peroxides, ketone peroxides …
Explanatory notes
… Sub-Chapter IV ETHERS, ALCOHOL PEROXIDES, ETHER PEROXIDES, ACETAL AND HEMIACETAL PEROXIDES , KETONE PEROXIDES, EPOXIDES WITH A THREE-MEMBERED RING, ACETALS AND … nitrated or nitrosated derivatives : 2909.41 - - 2,2’-Oxydiethanol (diethylene glycol, digol) 2909.43 - - …Section VI > Chapter 28 > Heading 2815
… Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium. …
Explanatory notes
… 28.15 ‑ Sodium hydroxide (caustic soda); potassium hydroxide (caustic potash); peroxides of sodium or potassium. ‑ Sodium … is used in soap manufacture, for bleaching fabrics, as an oxidising agent in organic synthesis, or for purifying …Section VI > Chapter 29 > Heading 2917
… Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or …
Explanatory notes
… 29.17 - Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, … peroxides, peroxyacids and their derivatives : 2917.11 - - Oxalic acid, its salts and esters 2917.12 - - Adipic acid, … potassium, sodium, calcium, iron and ammonium-iron oxalates. Its main esters are dimethyl and diethyl …Section VI > Chapter 29 > Heading 2915
… Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or …
Explanatory notes
… Sub-Chapter VII CARBOXYLIC ACIDS AND THEIR ANHYDRIDES , HALIDES, PEROXIDES AND PEROXYACIDS AND THEIR HALOGENATED, … are compounds in which two acyl radicals are linked by two oxygen atoms; their general formula is RC(O)OOC(O)R 1 * , in …Section VI > Chapter 28 > Heading 2817
… Zinc oxide; zinc peroxide. …
Explanatory notes
… 28.17 ‑ Zinc oxide; zinc peroxide. (A) ZINC OXIDE Zinc oxide (zinc white) (ZnO) is obtained by burning zinc vapour with oxygen from air. The zinc vapour is obtained by vaporising …Section VI > Chapter 28 > Heading 2819
… Chromium oxides and hydroxides. …
Explanatory notes
… 28.19 ‑ Chromium oxides and hydroxides. 2819.10 ‑ Chromium trioxide 2819.90 ‑ … When combined with alcohol it gives explosive mixtures. An oxidising agent in organic chemistry (manufacture of isatin, …Section VI > Chapter 28 > Heading 2841
… Salts of oxometallic or peroxometallic acids. …
Explanatory notes
… 28.41 ‑ Salts of oxometallic or peroxometallic acids. 2841.30 ‑ Sodium … and peroxometallic acids (corresponding to metal oxides which constitute anhydrides). The main groups of …Section VI > Chapter 28 > Heading 2811 > 2811.2 > 2811.22
… Silicon dioxide …
Classification opinions
… 1. Silica fume , composed of ultrafine amorphous silicon dioxide particles (not less than 80 % by weight), formed as … impurities include carbon, silicon, silicon carbide and oxides of alkaline metals. The product typically contains … that binds harmful substances such as allergens, toxins, bacteria and viruses, and removes them from the …Section VI > Chapter 28 > Heading 2818
… corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide. …
Explanatory notes
… corundum, whether or not chemically defined; aluminium oxide; aluminium hydroxide. 2818.10 ‑ Artificial corundum, … The aluminium oxide may contain small proportions of other oxides (e.g., titanium oxide, chromium oxide) either …Section VI > Chapter 28 > Heading 2821
… Iron oxides and hydroxides; earth colours containing 70 % or more by weight …