Benzene Process Fumaric Acid from Canada
Fumaric acid isolated from benzene partial oxidation routes, primarily for unsaturated polyester resin manufacture. Aromatic hydrocarbon derivation confirmed by carbon isotope analysis. Classified 2917.19.1500 excluding cyclic byproducts like maleic anhydride.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit bill of materials tracing benzene feedstock through oxidation
• Confirm melting point 287°C ± 2°C specification for identity
• Separate hazardous maleic anhydride residues to avoid mixed classification