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2930.90.92.31/Tetramethylthiuram Disulfide (TMTD)/Canada

Tetramethylthiuram Disulfide (TMTD) from Canada

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 — Canada → United States

13.7%

Rate breakdown

9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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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

Tetramethylthiuram Disulfide (TMTD) from Canada — Import Duty Rate | HTS 2930.90.92.31