2-Mercaptobenzothiazole (MBT) from Japan
MBT is a primary rubber accelerator used in acidic and neutral compounding systems, providing good aging properties. As a benzothiazolethiol organo-sulfur compound principally for rubber processing, it falls under HTS 2930.90.92.31 per Chapter 29 definitions.
Duty Rate — Japan → United States
3.7%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Provide comparative rheometer curves demonstrating rubber curing performance
• Declare exact mercapto content as impurities affect duty calculation basis
• Confirm not for copper fungicide use to avoid Chapter 38 reclassification