Benzothiazyl Disulfide (MBTS) from Canada
MBTS serves as a retarder, secondary accelerator, and sulfur donor in rubber vulcanization systems. This organo-sulfur disulfide's predominant rubber processing role qualifies it for HTS 2930.90.92.31 classification.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• CAS 120-78-5 must appear on all documentation
• Distinguish from pure disulfides used in pharma (2930.90.91)
• Thermal stability data recommended for customs verification