Methylcyclopentadienyl Manganese Tricarbonyl from Canada
MCDC (methylcyclopentadienyl manganese tricarbonyl) is an organomanganese fuel additive with Mn-C bonds, qualifying as organo-inorganic under 2931.90.90. Used as MMT gasoline antiknock agent; chapter notes exclude it from hydrocarbon (Ch27) or inorganic metal (Ch28) classifications.
Duty Rate — Canada → United States
13.7%
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
• EPA fuel additive registration required (40 CFR 79); provide formulation data to customs
• Liquid toxic material—UN1736 packaging with secondary containment mandatory
• Document manganese content for CAA SIP compliance in importing states