Cyclopentadienyl Manganese Tricarbonyl from Canada
Cyclopentadienyl manganese tricarbonyl (CMT) is an organometallic compound used as an antiknock additive in fuels (MMT precursor). Falls under 2931.90.90.52 as 'other organo-inorganic compounds' with manganese-carbon bonds directly linked.
Duty Rate — Canada → 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
9903.05.2910%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 registration required for fuel additive use; include TSCA inventory status
• Classify as UN 3388 organometallic substance; use Type 4J1 drums maximum
• Provide spectral analysis confirming Mn-C bonds to prevent Chapter 28 misclassification