Styrene Monomer from China
Styrene monomer (C6H5CH=CH2) is a clear, colorless liquid cyclic hydrocarbon used primarily as a building block for polystyrene plastics and synthetic rubbers. It falls under HTS 2902.50.00.00 as a separate chemically defined cyclic hydrocarbon, specifically styrene. This unsaturated aromatic compound polymerizes readily when initiated.
Duty Rate — China → United States
35%
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Verify purity levels (>99.5%) via Certificate of Analysis to confirm classification as chemically defined styrene, avoiding mixtures under Chapter 27
• Include Material Safety Data Sheets (MSDS) documenting inhibitor content (e.g
• TBC) as stabilizer permitted under Chapter 29 note 2(f)
• Ensure proper UN1266 hazmat labeling and IBC/steel drum packaging compliant with DOT regulations for flammable liquids