Triazine-based Rubber Accelerator TZ from Canada
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 — Canada → United States
13.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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