Inhibited Styrene Monomer from Germany
Inhibited styrene monomer contains 10-15 ppm tert-butylcatechol (TBC) as a polymerization stabilizer, maintaining stability during storage and transport. Classified under HTS 2902.50.00.00 per Chapter 29 note 2(f) allowing stabilizers necessary for preservation. Used in resin manufacturing and as copolymer feedstock.
Duty Rate — Germany → United States
10%
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
Import Tips
• Document stabilizer concentration (<50 ppm) in SDS to qualify under permitted additions of Chapter 29 note 2(f); excess may trigger mixture classification
• Use nitrogen-blanketed tank containers to prevent premature polymerization during ocean transit, common cause of denied entries
• Provide GC/MS analysis confirming >99% styrene content despite inhibitor presence