p-Aminoazobenzene-2,4-disulfonic acid, 98% purity from Canada
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 — Canada → United States
15.8%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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