Tetramethyl Lead (TML) from Mexico
Tetramethyl lead is a liquid organolead compound with formula Pb(CH3)4, serving as an antiknock agent similar to TEL but with methyl groups. Classified under HTS 2931.10.00.00 as it is explicitly named in the heading for organo-inorganic compounds with direct C-Pb bonds.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Label as UN 1649 hazardous substance with proper DOT shipping papers
• Confirm no impurities render it a mixture outside Chapter 29 note (a)
• Test for stabilizer content to avoid reclassification