2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane from Japan
This dialkyl peroxide serves as a high-temperature initiator for crosslinking polyethylene and silane-modified polymers. HTS 2909.60.5000 covers it as a chemically defined ether peroxide, with permitted anticaking stabilizers per Chapter 29 note (f).
Duty Rate — Japan → United States
12.5%
Rate breakdown
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
• Declare exact chemical name and CAS (78-63-7) for precise HTS verification
• Provide thermal stability data showing SADT >65°C for reduced shipping restrictions
• Distinguish from Chapter 39 polymer masterbatch by proving pure paste/liquid form