1,2,5,8-Tetrahydroxyanthraquinone (Quinizarin) from Mexico
Quinizarin contains four hydroxy groups on the anthraquinone core, classified as quinone with other oxygen functions under HTS 2914.61.00.00. Important for disperse dye manufacturing.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Melting point (194-197°C) specification confirms identity from commercial sources
• Sublimation purification common; declare post-purification purity level
• Technical vs. analytical grades affect documentation requirements