Technical Grade Tobias Acid 99% from Mexico
High-purity technical grade Tobias acid (99% min) used in industrial dye manufacturing. Classified under HTS 2921.45.90.10 as a separate chemically defined aromatic amine-sulfonic acid derivative. Supplied as off-white powder with standardized assay.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Batch analysis certificates must specify HPLC purity >98.5% and <0.5% isomer content
• Dark amber glass/plastic drum packaging required to prevent oxidation; verify container certificates