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