High-Purity 4,4'-Biphenol Flakes from Mexico
High-purity 4,4'-Biphenol in flake form (>99.5% purity) is a key polyphenol for advanced polymer production, specifically named in HTS 2907.29.15.00. It serves as a monomer in polycarbonate resins and flame retardants. Meets Chapter 29 requirements for separate chemically defined organic compounds without disqualifying impurities.
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
• Include HPLC purity certificate showing >99% to affirm chemical definition; Use UN-approved packaging for phenolic compounds to meet transport safety notes (e); Watch for anti-dumping duties on phenol derivatives from certain origins