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CN 2917 39 95 · Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their halogenated, sulphonated, nitrated or nitrosated derivatives (excl. esters of orthophthalic acid, phthalic anhydride, terephthalic acid and its salts, dimethyl terephthalate, ester or anhydride of tetrabromophthalic acid, benzene-1,2,4-tricarboxylic acid, isophthaloyl dichloride containing by weight <= 0,8% · Tradaro