Technical Grade Tobias Acid 99% from Canada
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 — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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