Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 18 Carboxylic acids with additional oxygen function and their ... derivatives 29 18 11 Lactic acid, its salts and esters 29 18 11 00 Lactic acid, its salts and esters Commodity Code Description 29 18 11 00 000 Lactic acid, its salts and esters