Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 04 Sulphonated, nitrated or nitrosated derivatives of hydrocarbons 29 04 31 Perfluorooctane sulphonic acid 29 04 31 00 Perfluorooctane sulphonic acid Commodity Code Description 29 04 31 00 000 Perfluorooctane sulphonic acid
