7-(Methylamino)-1-naphthol-3-sulfonic Acid from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Isomer purity >98% by HPLC; sodium salt common—declare form; dye coupling activity test