TDI Diazo Ester Intermediate from Japan
1-Naphthalenesulfonic acid, 3-diazo-3,4-dihydro-4-oxo-ar'-(1-methylethyl)[1,1'-biphenyl]-4-yl ester used as synthesis intermediate for advanced photoresists in semiconductor production. Enumerated specifically in HTS 2927.00.18.00 diazo compounds subheading.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Semiconductor industry imports require NIST-traceable purity certificates (>99.5% typically)
• ITAR/EAR export controls may apply to downstream semiconductor uses; verify end-use statements
• Avoid bulk mixture classification—separate pure compounds maintain Chapter 29 status