Benzothiazole-2-thiol (Captax) from Mexico
Benzothiazole-2-thiol, commonly known as Captax, is a key vulcanization accelerator for natural and synthetic rubbers. This pure organic compound features the hydrogenated benzothiazole ring-system and is classified under HTS 2934.20.8000 as an 'other' heterocyclic compound per Chapter 29 notes.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%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
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide detailed spectral analysis (NMR, IR) to confirm benzothiazole ring structure for Customs verification
• Register as a TSCA chemical and obtain PMN if new formulation; include TSCA certification on commercial invoice