7-(Methylamino)-1-naphthol-3-sulfonic Acid from Canada
Naphthol isomer specifically enumerated in HTS 2922.29.10.00. Amino-naphthol with sulfonic acid and methylamino groups. Essential for azoic dye coupling components.
Duty Rate — Canada → United States
15.8%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Isomer purity >98% by HPLC; sodium salt common—declare form; dye coupling activity test