Tetramethylthiuram Monosulfide (TMTM) from Mexico
Tetramethylthiuram monosulfide (TMTM) serves as a delayed-action accelerator in rubber compounding, particularly for thick articles. It is classified in HTS 2930.30.60.00 as an 'other' thiuram sulfide under organo-sulfur compounds, containing the required direct sulfur-carbon linkages. This product is handled as a high-purity chemical intermediate.
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
• Include structural formula verification in documentation to prove thiuram classification; ensure no metal coordination that would shift to heading 2942; store in original industrial packaging to avoid retail classification