Tetramethylthiuram Monosulfide (TMTM) from Mexico
TMTM serves as a rubber accelerator and vulcanizing agent with aromatic dithiocarbamate structure. HTS 2930.20.20.50 covers this as an 'other' aromatic thiocarbamate per Chapter 29 organo-sulfur provisions. Technical grade distinguishes from formulated rubber chemicals.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide vulcanization test data confirming chemical accelerator function
• Ensure dust-free packaging with anti-caking agents per Chapter 29 note (f) allowances
• Cross-check against AD/CVD orders for Indian and Chinese producers