2917: Polycarboxylic aci, their anhydrides, halides etc & their derivatives

291711: oxalic acid, its salts and esters 291712: Adipic acid, its salts and esters 291713: Azelaic acid, sebacic acid, their salts and esters 291714: Maleic anhydride 291719: Acyclic polycarboxylic acids and their derivatives, nes 291720: Cyclanic, cyclenic/cycloterpenic poly carboxylic acids & thr derivati 291731: Dibutyl orthophthalates 291732: Dioctyl orthophthalates 291733: Dinonyl or didecyl orthophthalates 291734: orthophthalic acid esters, nes 291735: Phthalic anhydride 291736: Terephthalic acid and its salts 291737: Dimethyl terephthalate 291739: Aromatic polycarboxylic acids and their derivatives, nes 2917: Polycarboxylic aci, their anhydrides, halides etc & their derivatives