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 91 2,4,5T (ISO) (2,4,5trichlorophenoxy aceticacid), its salts and esters Commodity Code Description 29 18 91 00 2,4,5T (ISO) (2,4,5trichlorophenoxy aceticacid), its salts and esters