Tetramethylthiuram Disulfide (TMTD) from Japan
Tetramethylthiuram disulfide, commonly known as TMTD, is a thiuram disulfide used primarily as an accelerator in rubber vulcanization processes. It falls under HTS 2930.30.60.00 as it is a thiuram disulfide compound containing sulfur directly linked to carbon atoms, classified as an organo-sulfur compound per Chapter 29 notes. This chemical is supplied as a pure, separate organic compound without additives that would alter its classification.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Verify purity certificate to confirm it meets 'separate chemically defined organic compound' criteria; ensure MSDS and REACH compliance for handling thiuram compounds; avoid packaging that suggests retail sale to prevent reclassification