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 Commodity Code Description 29 18 11 - - Lactic acid, its salts and esters 29 18 12 - - Tartaric acid 29 18 13 - - Salts and esters of tartaric acid 29 18 14 - - Citric acid 29 18 15 - - Salts and esters of citric acid 29 18 16 - - Gluconic acid, its salts and esters 29 18 17 - - 2,2-Diphenyl-2-hydroxyacetic acid (benzilic acid) 29 18 18 - - Chlorobenzilate (ISO) 29 18 19 - - Other 29 18 21 - - Salicylic acid and its salts 29 18 22 - - O-Acetylsalicylic acid, its salts and esters 29 18 23 - - Other esters of salicylic acid and their salts 29 18 29 - - Other 29 18 30 - Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives 29 18 91 - - 2,4,5-T (ISO) (2,4,5-trichlorophenoxy- aceticacid), its salts and esters 29 18 99 - - Other