Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 15 Saturated acyclic monocarboxylic acids and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. 29 15 60 Butanoic acids, pentanoic acids, their salts and esters Commodity Code Description 29 15 60 00 Butanoic acids, pentanoic acids, their salts and esters