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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If perchlorinated or polyhalogenated
Halogenated derivatives of heterocyclic nitrogen compounds fall under specific subheadings earlier in numerical order per Chapter 29 notes.
If classified primarily as cyclic aminic structure without heterocyclic emphasis
Chapter notes prioritize classification in the last occurring heading; some cyclic amines may shift to Chapter 29 acyclic/noncyclic amine headings.
If imported as mixture or solution exceeding 30% concentration
Solutions not qualifying under Chapter 29 note (e)(f)(g) for safety/transport fall into prepared chemical mixtures of heading 3824.
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Import Tips & Compliance
• Verify purity certificate (≥98%) and provide chemical safety data sheet (SDS) for DOT compliance during import
• Ensure proper UN packaging group II labeling as it's a flammable liquid; avoid common pitfalls like incorrect hazard class declaration
• Confirm REACH or TSCA registration for U.S. entry; maintain chain of custody documentation from manufacturer
Related Products under HTS 2933.99.89.00
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.
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.