Section 06 Products of the chemical or allied 29 Organic chemicals 29 23 Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined Commodity Code Description 29 23 10 - Choline and its salts 29 23 20 - Lecithins and other phosphoaminolipids 29 23 30 - Tetraethylammonium perfluorooctane sulphonate 29 23 40 - Didecyldimethylammonium perfluorooctane sulphonate 29 23 90 - Other