Methylcyclopentadienyl Manganese Tricarbonyl from Mexico
Methylcyclopentadienyl manganese tricarbonyl (MMT) is an organomanganese fuel additive replacing lead compounds. Classified 2931.90.90.52 as organo-inorganic with Mn-C bonds.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• EPA fuel additive waiver required; include registration number
• Class 6.1 toxic liquid UN 3283; secondary containment mandatory
• Purity >98% required for fuel blending approval