Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 23 Quaternary ammonium salts and hydroxides; lecithins and other phosphoaminolipids, whether or not chemically defined. 29 23 30 Tetraethylammonium perfluorooctane sulphonate 29 23 30 00 Tetraethylammonium perfluorooctane sulphonate Commodity Code Description 29 23 30 00 000 Tetraethylammonium perfluorooctane sulphonate