Thioxanthene-9-one (Thioxanthone) from China
Thioxanthene-9-one, commonly called thioxanthone, is a tricyclic aromatic heterocyclic ketone with a central sulfur atom. It is specifically enumerated under HTS 2934.99.05.00 as an 'aromatic heterocyclic compound.' Widely used as a photoinitiator in UV-curable inks, coatings, and adhesives.
Duty Rate — China → United States
5.8%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include UV absorption spectrum data confirming photoinitiator properties while maintaining chemical classification
• Light-protected packaging essential to prevent premature activation during transit
• Specify 'technical grade >98% purity' on invoices to distinguish from formulated ink preparations