Triazine-based Rubber Accelerator TZ from Japan
TZ (2-mercapto-4,6-bis(pentylamino)-s-triazine) functions as a delayed-action vulcanization accelerator for natural and synthetic rubber, improving processing safety. Classified under HTS 2933.69.60.30 as it contains an unfused triazine ring and is principally used in rubber processing, fitting Chapter 29's scope for separate chemically defined compounds.
Duty Rate — Japan → United States
24%
Rate breakdown
9903.04.6211.5%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 end-use statements specifying rubber vulcanization to justify 2933.69.60.30 over general triazine codes; CBP often challenges accelerator classifications
• Test for >95% purity to avoid reclassification as mixtures under Chapter 38; declare CAS 59619-57-0 explicitly