TMTD Tetramethylthiuram Disulfide from Canada
TMTD (tetramethylthiuram disulfide), synonymous with thiram, is an aromatic dithiocarbamate used both as a rubber accelerator and seed protectant. HTS 2930.20.20 covers it as 'other' aromatic due to its S-S linked dithiocarbamate structure. Commonly traded as 98% pure flakes or powder.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Dual-use documentation clarifying industrial vs agricultural end-use prevents reclassification
• Provide MSDS with flash point and decomposition data for proper hazard classification
• Ensure batch certificates confirm purity >95% to maintain Chapter 29 status