29173904

HS code 2917.39.04.00 (Chapter 29 "Organic chemicals"; Heading 2917 "Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives"; Subheading 291739 "Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives") under the United States tariff schedule classifies "1,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride". United States customs apply MFN rate of 6.5%, Column 2 rate 15.4¢/kg + 37%. Statutory unit of measure: kg. 17 free trade agreement preferential rates are available for this code.