Glycidyl Methacrylate from China
Glycidyl methacrylate (GMA) features an epoxide ring for crosslinking in powder coatings and composites. As a methacrylic acid ester derivative, it classifies under HTS 2916.14.20 'other,' compliant with Chapter 29 exclusion of epoxides only for ring-position heteroatoms. The ester function determines primary classification.
Duty Rate — China → United States
41.2%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 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
• Epoxide equivalent weight (EEW 130-150) testing validates structure integrity
• pH stability (6.5-7.5) indicates hydrolysis-free product
• Nitrogen blanketing during storage prevents peroxide formation