Carbazole Powder
Pure carbazole (C12H9N) is a tricyclic aromatic heterocyclic compound with nitrogen hetero-atom, classified under HTS 2933.99.11.00 as an aromatic heterocyclic compound. It appears as white to pale yellow flakes or powder, primarily used as an intermediate in dye and pigment production.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when pre-dissolved in solvent for pigment production
Solutions of carbazole specifically prepared for synthetic pigment manufacture fall under synthetic organic products of heading 3204
If imported as mixture with other organic chemicals
Mixtures of organic chemicals not chemically defined as single compounds are classified in Chapter 38 as chemical preparations
If technically considered a cyclic hydrocarbon derivative
Some aromatic compounds without predominant nitrogen function may fall under Chapter 29 hydrocarbons if not qualifying as heterocyclic
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Import Tips & Compliance
• Provide detailed chemical analysis (CAS 86-74-8, purity certificate) to confirm classification as pure carbazole under Chapter 29 note (a)
• Ensure packaging complies with UN 3077 hazardous material regulations for environmental hazards; include Safety Data Sheet (SDS)
• Verify no added solvents or stabilizers that would shift classification to solutions under Chapter 29 note (e)
Related Products under HTS 2933.99.11.00
N-Ethylcarbazole
N-Ethylcarbazole features ethylation on the nitrogen hetero-atom of the carbazole ring system, qualifying as modified aromatic under HTS 2933.99.11.00. Widely used in organic electronics, photorefractive materials, and dye intermediates.
Carbazole Technical Grade 98%
Technical grade carbazole (98% purity) contains minor impurities but remains a separate chemically defined organic compound per Chapter 29 note (a), classified under HTS 2933.99.11.00. Primarily used in large-scale dye and agrochemical manufacturing.
4-Carbazoleboronic Acid
4-Carbazoleboronic acid retains the core carbazole heterocyclic structure with boronic acid substitution, classified as modified aromatic under HTS 2933.99.11.00 per Chapter 29 organo-inorganic compound rules. Essential Suzuki coupling reagent for pharmaceutical synthesis.
9H-Carbazole Flakes
9H-Carbazole in flake form is the standard commercial presentation of this aromatic heterocyclic compound, classified specifically under HTS 2933.99.11.00. Used extensively in production of carbazole violet pigments and pharmaceuticals.
3-Aminocarbazole
3-Aminocarbazole is a modified aromatic derivative of carbazole with an amino group substitution, maintaining the core heterocyclic nitrogen structure required by HTS 2933.99.11.00. Used as an intermediate in pharmaceutical and optical brightener synthesis.