Diazo Biphenyl Photoinitiator from China
1-Naphthalenesulfonic acid, 3-diazo-3,4-dihydro-4-oxo-ar'-(1-methylethyl)[1,1'-biphenyl]-4-yl ester, a specific diazo compound used in photoresist formulations for electronics manufacturing. Classified under HTS 2927.00.18.00 as an explicitly named diazo compound meeting Chapter 29 organic compound criteria.
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
• Require supplier SDS and NMR spectra confirming exact structure matches the tariff description to avoid reclassification
• These compounds often need REACH registration in EU; prepare US TSCA compliance documentation in advance