Acridine Orange Base from United States
Acridine Orange Base is a dialkylamino-substituted acridine derivative used as a precursor in the synthesis of fluorescent dyes. It is classified under tariff item 2933.99.00 as a heterocyclic compound with nitrogen hetero-atom(s) only, based on its acridine core structure. The free base form is distinct from its hydrochloride salt, which would be classified separately.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the product is the free base and not a salt, as salts may be classified under a different subheading per Chapter 29 Note 5(C)
• Provide the exact chemical structure and purity on shipping documents
• Check if the product requires a controlled substances permit if used in certain applications