1-Naphthylamine-8-sulfonic Acid (Peri Acid) from Germany
Peri Acid serves as a dye intermediate for naphthol AS dyes used in textile coloration. It qualifies under HTS 2921.45.90 as an 'other' 1-Naphthylamine derivative per Chapter 29's amine-function compounds. The peri-position sulfonic acid maintains aromatic monoamine classification.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Use systematic name 8-amino-1-naphthalenesulfonic acid (CAS 82-75-7) on all docs
• Test for heavy metal impurities; exceedances trigger additional EPA scrutiny
• Declare intended dye manufacturing use to prevent reclassification as finished colorant