AH Salt for Nylon Production from Mexico
AH Salt (Adipic acid-Hexamethylenediamine salt) is the technical name for hexamethylenediamine adipate under HTS 2921.22.0500, serving as the monomer salt for high-performance Nylon 6,6 resins. This pure chemical intermediate enables direct salt melt polymerization without water removal steps. Used by major nylon producers worldwide.
Duty Rate — Mexico → United States
16.5%
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 CAS number 3323-53-3 documentation and NMR spectrum if requested by customs; ensure packaging prevents moisture absorption (use nitrogen-purged bags); declare correct UN number for diamine compounds