2931.90.90.52/Cyclopentadienyl Manganese Tricarbonyl/Mexico

Cyclopentadienyl Manganese Tricarbonyl from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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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