Diazo Biphenyl Photoinitiator from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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