p-Toluidine-m-sulfonic acid from Canada
p-Toluidine-m-sulfonic acid (CAS No. 88-44-8) is a chemically defined aromatic monoamine derivative with both amino and sulfonic acid functional groups, classified under HTS 2921.43.9040 as a toluidine derivative salt. It serves as a key intermediate in dye synthesis and pharmaceutical production.
Duty Rate — Canada → United States
16.5%
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
• Verify CAS No. 88-44-8 on all documentation and labels to match exact HTS 2921.43.90.40 specification
• Provide purity certificates (>98%) as impurities may affect classification under Chapter 29 note (a)
• Ensure SDS includes handling for corrosive sulfonic acid properties to comply with hazmat shipping