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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing nucleic acid type structure
Nucleic acid derivatives have specific provisions earlier in Chapter 29, taking precedence by numerical order.
If as alkylated arylamine derivative
If structural interpretation emphasizes amine function over heterocycle, it may classify under cyclic monoamines.
If diluted beyond Chapter 29 solvent allowances
Exceeding permitted solvent concentrations for transport disqualifies from pure compound headings per Chapter note (e).
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Import Tips & Compliance
• Label as 'Corrosive, flammable liquid UN 2735'; ensure secondary containment for spill prevention during ocean freight
• Provide NMR spectrum verification; customs may challenge classification if documentation lacks structural confirmation
• Avoid retail packaging over 1L to prevent shift to consumer chemical headings; bulk industrial packaging maintains Chapter 29 status
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.
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.
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.