p-Aminoazobenzene-2,4-disulfonic acid, 98% purity from China
High-purity technical grade p-Aminoazobenzene-2,4-disulfonic acid meets Chapter 29 definition for separate chemically defined azo compounds with sulfonic acid groups under HTS 2927.00.06.00. Primary use as dye coupling component.
Duty Rate — China → United States
43.3%
Rate breakdown
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
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Batch certificates must specify >95% purity to qualify as 'separate chemically defined compound' vs mixtures
• Label drums with GHS corrosive pictogram and pH <2 warning for sulfonic acid content
• Avoid wooden pallets; use chemical-compatible plastic or steel drums per DOT specifications