Glyoxal Bis-Imidazole Precursor
Pure Imidazole serving as precursor for glyoxal bis(2-hydroxyanil), a photographic chemical, classified in HTS 2933.29.60.00 as unfused imidazole. Used in dye synthesis for imaging applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If formulated as synthetic coloring intermediate
Chapter excludes coloring matters, directing to Chapter 32 for dye intermediates.
If polymerized or cyclic ether derivative
Heterocyclic compounds with oxygen may classify under 2932 if ring structure qualifies.
If esterified for saturated acyclic use
Esters of imidazole carboxylic acids follow acid classification in earlier headings.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Certify non-coloring per chapter exclusions; ensure no added stabilizers rendering it use-specific; comply with TSCA registration for US chemical import
Related Products under HTS 2933.29.60.00
Imidazole (C3H4N2)
Imidazole is a five-membered heterocyclic aromatic compound with two nitrogen atoms, classified under HTS 2933.29.60.00 as a compound containing an unfused imidazole ring. It serves as a fundamental building block in organic synthesis for pharmaceuticals and agrochemicals.
1H-Imidazole Pharmaceutical Grade
High-purity 1H-Imidazole used in synthesis of antifungal drugs like clotrimazole, classified under HTS 2933.29.60.00 for unfused imidazole rings. Meets USP standards for medicinal intermediate production.
Imidazole Buffer Reagent ACS Grade
ACS-certified Imidazole used as a buffering agent in biochemical assays and protein purification, under HTS 2933.29.60.00 for its unfused imidazole structure. Essential in lab pH control between 6.0-7.0.
4-Nitroimidazole Intermediate
Imidazole with nitro group at position 4, but primarily classified as imidazole under HTS 2933.29.60.00 per chapter notes on derivatives. Key for metronidazole antibiotic synthesis.
Imidazole Corrosion Inhibitor Base
Technical-grade Imidazole used as base for copper corrosion inhibitors in industrial coolants, under HTS 2933.29.60.00 for unfused ring structure. Forms complexes with metal surfaces.
2-Methylimidazole Catalyst
2-Methylimidazole, a alkyl-substituted imidazole used as epoxy resin curing catalyst, classified under HTS 2933.29.60.00 as 'other' imidazole. Promotes cross-linking in polymer production.