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
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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