Nylon 6,6 Polymerization Salt (AH Salt) from Canada
AH Salt is the industrial name for hexamethylenediamine adipate used directly in nylon 6,6 manufacturing, explicitly derived from adipic acid and hexamethylenediamine. It meets HTS 2921.22.1000 criteria as an acyclic polyamine salt with adipic acid origin. Shipped as 60-70% aqueous solutions for polymerization processes.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include polymerization process specifications showing adipic acid molar equivalence in documentation
• Monitor water content (typically 30-40%) as excessive dilution may trigger Chapter 29 note (e) solvent restrictions
• Obtain REACH/ TSCA pre-registration for EU/US chemical compliance before importation