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Tetramethylthiuram Disulfide (TMTD) from China

TMTD functions as both an accelerator and sulfur donor in rubber vulcanization, particularly effective in EPDM and low-sulfur compounds. It qualifies for HTS 2930.90.92.31 as a thiuram disulfide organo-sulfur compound whose principal use is rubber processing, consistent with chapter notes.

Duty Rate — China → United States

16.2%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Include vulcanization test data confirming rubber processing end-use to support classification

Ensure packaging prevents moisture absorption which could affect purity declarations

Note skin sensitization warnings on SDS as this triggers specific OSHA labeling for imports