2909.60.50.00/2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane/Japan

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

13.7%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter

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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