Tetramethylthiuram Disulfide (TMTD) from Japan
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 — Japan → United States
23.8%
Rate breakdown
9903.04.6211.3%Patented pharmaceutical articles that are the product of Japan, of a European Union member country, of South Korea, of Switzerland, or of Liechtenstein as provided for in subdivisions (c) and (f) of U.S. note 40 to this subchapter
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
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