Cumene Sulfonic Acid from Canada
Cumene sulfonic acid from isopropylbenzene sulfonation contains only sulfo groups, used in hydrotropic formulations. Meets HTS 2908.99.1500 criteria as pure sulfonated phenol derivative.
Duty Rate — Canada → United States
15.5%
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
• Specify IPB content <0.5%; flash point certification >93°C
• Common error: Phenol sulfonate confusion leading to incorrect Chapter 29 heading