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 29 23 40 - Didecyldimethylammonium perfluorooctane sulphonate Commodity Code Description 29 23 40 00 - Didecyldimethylammonium perfluorooctane sulphonate