Nylon 6,6 Polymerization Salt (AH Salt)
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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If polyamine derivatives other than hexamethylenediamine
Different polyamine structures fall under other amine-function compound headings.
If imported as adipic acid only
Pure adipic acid is classified under its specific carboxylic acid heading in 2917.
If containing metal coordination complexes
Coordination compounds with metals are classified by Chapter 29 note 5(C)(3) metal fragment rules.
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Import Tips & Compliance
• 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
Related Products under HTS 2921.22.10.00
Hexamethylenediamine Adipate Salt
Hexamethylenediamine adipate salt is a 1:1 salt formed from hexamethylenediamine and adipic acid, classified under HTS 2921.22.1000 because it is derived in whole or in part from adipic acid. This compound serves as a key intermediate in nylon 6,6 polymer production.
Purified Nylon Salt for High-Performance Fibers
High-purity (>99.5%) hexamethylenediamine adipate salt for premium nylon 6,6 tire cord and airbag yarn production. The adipic acid derivation ensures classification under HTS 2921.22.1000. Supplied as molten salt or concentrated solutions to minimize impurities.
Stabilized Hexamethylenediamine Adipate for Transport
Hexamethylenediamine adipate with added commercial stabilizer (per Chapter 29 note f) for safe bulk transport. Adipic acid derivation maintained, qualifying for HTS 2921.22.1000. The stabilizer prevents oxidation during long-distance shipping.
Technical Grade 6,6-Nylon Salt Solution 60%
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.
Industrial Grade Hexamethylenediamine Diadipate
Hexamethylenediamine diadipate (1:2 salt ratio) provides excess carboxylic functionality for specialized nylon copolymer production. Derived entirely from adipic acid, it qualifies under HTS 2921.22.1000 as specified in the heading. Used in high-performance engineering polymers.
Hexamethylenediamine Adipic Acid Monosalt
Partial neutralization product (1:0.5 molar ratio) of hexamethylenediamine with adipic acid, used in specialty polymer modifiers. Still principally derived from adipic acid per HTS 2921.22.1000 requirements. Intermediate for copolyamide synthesis.