Saccharin Impurity A (o-Sulfamoylbenzoic Acid) from China
o-Sulfamoylbenzoic acid, known as Saccharin Impurity A, is a key intermediate in saccharin synthesis and a chemically defined organic compound under HTS 2942.00.50.00. It features both sulfonic acid and carboxylic acid functionalities on a benzene ring.
Duty Rate — China → United States
41.2%
Rate breakdown
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)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Provide HPLC purity certificates (>98%) and impurity profiles required for pharmaceutical-grade intermediates
• Declare CAS number (6283-61-2) and IUPAC name on commercial invoice for accurate classification
• Ensure proper hazard communication labeling (corrosive) per GHS standards