2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane from Canada
This symmetrical aromatic ketone peroxide functions as a high-temperature initiator for polyethylene crosslinking. Falls under HTS 2909.60.10.00 as a chemically defined aromatic peroxide specified in additional U.S. note 3 to section VI.
Duty Rate — Canada → United States
15.5%
Rate breakdown
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
• Require manufacturer's test data on self-accelerating decomposition temperature for customs and transport
• Confirm chemical purity >99% to maintain classification under pure compounds vs mixtures
• Include emergency response information per 49 CFR for hazardous material imports