Hexamethyleneimine 99% Technical Grade
Technical grade hexamethyleneimine at 99% purity, a colorless liquid heterocyclic amine used in agrochemical and polymer synthesis. Classified under HTS 2933.99.89.00 as it matches the specific chemical definition for separate chemically defined organic heterocyclic nitrogen compounds. Impurities are minimal and do not alter its principal classification.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing a benzimidazole ring system
Specific fused heterocyclic systems have dedicated subheadings that take precedence over the general 'other' category.
If for quaternary ammonium salts of this compound
Quaternized nitrogen heterocyclic compounds may classify under amine salts rather than parent heterocycles per note on salts.
If imported as a specific sugar derivative
Certain modified heterocycles used in pharmaceutical sugars fall under heading 2942 per Chapter notes (c).
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Import Tips & Compliance
• Include GC-MS analysis certificate to confirm isomer purity; U.S
• Customs may test for compliance with Chapter 29 chemical definition
• Use UN-approved drums with nitrogen blanketing to prevent oxidation; common pitfall is inadequate stabilization leading to rejection
• Pre-register with EPA for TSCA inventory; provide end-use statement to avoid anti-dumping scrutiny on chemical intermediates
Related Products under HTS 2933.99.89.00
Hexamethyleneimine
Hexamethyleneimine, also known as homopiperidine, is a seven-membered heterocyclic compound with a single nitrogen hetero-atom in the ring structure. It falls under HTS 2933.99.89.00 as a specific compound within the category of heterocyclic compounds containing only nitrogen hetero-atoms, other than those specified elsewhere. This chemical is used as an intermediate in pharmaceutical synthesis and organic reactions.
1-Azacycloheptane (Hexamethyleneimine)
1-Azacycloheptane, the systematic name for hexamethyleneimine, is a saturated seven-membered ring with one nitrogen atom. It qualifies for HTS 2933.99.89.00 as a heterocyclic compound with nitrogen hetero-atoms only, explicitly listed in this subheading. Commonly used in coordination chemistry and as a ligand precursor.
Homopiperidine Stabilized with BHT
Homopiperidine (hexamethyleneimine) stabilized with butylated hydroxytoluene (BHT) to prevent oxidation during storage and transport. Falls under HTS 2933.99.89.00 per Chapter 29 note (f) allowing stabilizers necessary for preservation without changing specific use. Used in fine chemical manufacturing.
Hexamethyleneimine Hydrochloride Salt
The hydrochloride salt form of hexamethyleneimine, a solid crystalline material for easier handling in synthesis. Classified under HTS 2933.99.89.00 following Chapter 29 note on inorganic salts of organic compounds staying with the parent organic heading. Used in medicinal chemistry research.