Cyclopentadienyl Manganese Tricarbonyl from Japan
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 — Japan → United States
23.8%
Rate breakdown
9903.04.6211.3%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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