4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid from Canada
Complex chlorosulfonic pyrazole derivative explicitly in HTS 2933.19.08.00. Features unfused pyrazole ring and aromatic substitution per Chapter 29 notes. Used in high-performance dye coupling.
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
• Highly water-soluble; drum liners essential to prevent corrosion
• Sulfonic acid requires neutralization procedures in customs documentation
• Complex name demands precise CoA matching HTS nomenclature