tert-Butyl Peroxybenzoate from Mexico
tert-Butyl peroxybenzoate is an organic peroxide derived from benzoic acid, used as a catalyst in polymerization reactions for resins, coatings, and rubber curing. Classified under HTS 2916.39.03.00 due to its specific listing as a peroxyacid derivative of an aromatic monocarboxylic acid. Ships as a pale yellow liquid requiring temperature-controlled transport below 30°C.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
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
• Mandatory DOT/UN hazmat declaration (Class 5.2 organic peroxide) with proper stabilization certification
• Temperature data loggers required for shipments; deviations can lead to CBP holds and peroxide decomposition risks
• Confirm active oxygen content (AO%) matches specification to avoid reclassification as diluted preparation