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%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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