4,4'-Dihydroxybiphenyl Crystals from Mexico
4,4'-Dihydroxybiphenyl (synonym for 4,4'-Biphenol) in crystalline form is specifically enumerated under HTS 2907.29.15.00 within polyphenols. This chemically defined bis-phenol is essential for epoxy resin hardeners and pharmaceutical intermediates. Fits Chapter 29 scope excluding only listed non-applicable goods.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide melting point (165-170°C) and NMR spectrum for identity confirmation; Ensure stabilizer-free unless necessary for transport per note (f); Avoid bulk packaging over 25kg to minimize spill risks during inspection