Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 29 Organic chemicals 29 35 Sulphonamides. 29 35 20 N-Ethylperfluorooctane sulphonamide 29 35 20 00 N-Ethylperfluorooctane sulphonamide Commodity Code Description 29 35 20 00 00 N-Ethylperfluorooctane sulphonamide