Acridine Orange Base from Canada
Acridine orange base is a dialkylamino-substituted acridine used as fluorescent dye precursor, classified under HTS 2933.99.0500 based on acridine core. The free base form precedes any hydrochloride salt classification.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.60100%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Free base classified with acridine; salts follow base classification per Chapter notes
• Light-sensitive; amber packaging required to prevent degradation
• Avoid Chapter 32 classification by documenting use as chemical intermediate