Acriflavine Base Technical Grade from China
Technical grade acriflavine base is the non-salt form explicitly provided for in HTS 2933.99.4200. Used in industrial antiseptic formulations and aquaculture, this nitrogen-heterocyclic compound maintains the precise chemical identity required for this tariff subheading. Purity typically 95-98% for non-pharmaceutical applications.
Duty Rate — China → United States
112.5%
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
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Differentiate technical vs USP grades in documentation to avoid pharmaceutical scrutiny
• For aquaculture use, comply with EPA/FDA fish drug import regulations
• Batch certificates must specify 'base' vs 'hydrochloride' to match exact HTS description