3,6,9-Triethyl-3,6,9-trimethyl-1,4,7-triperoxonane from Japan
Methyl ethyl ketone cyclic trimer peroxide used in polyester resin curing. As a chemically defined ketone peroxide, it falls under HTS 2909.60.5000, with Chapter 29 notes confirming inclusion despite cyclic structure.
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
• Cyclic stability data differentiates from linear MEKP shipping requirements
• Confirm <9% active oxygen prevents Type D sensitivity classification