Section 06 Products of the chemical or allied 29 Organic chemicals 29 18 Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives 29 18 12 - - Tartaric acid 29 18 12 00 - - Tartaric acid Commodity Code Description 29 18 12 00 000 - - Tartaric acid