1,2,5,8-Tetrahydroxyanthraquinone (Quinizarin) from Germany
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 — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 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