Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 29 Organic chemicals 29 23 Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids 29 23 30 Tetraethylammonium perfluorooctane sulphonate 29 23 30 00 Tetraethylammonium perfluorooctane sulphonate Commodity Code Description 29 23 30 00 00 Tetraethylammonium perfluorooctane sulphonate