Technical Grade 6,6-Nylon Salt Solution 60% from Mexico
60% aqueous solution of hexamethylenediamine adipate for nylon polymerization reactors, derived from adipic acid per HTS 2921.22.1000. The water content constitutes normal transport preparation under Chapter 29 note (d). Widely used in continuous polymerization lines.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Karl Fischer titration certificates verifying 60±2% concentration essential for classification
• Use IBC totes with proper amine-resistant liners for solution shipments
• Monitor pH (7.5-8.5 typical) as indicator of salt integrity during transit