7-Amino-1-hydroxynaphthalene-3-sulfonic Acid from Germany
Also known as J acid, this naphthylamine derivative with hydroxy and sulfonic groups is crucial for synthesizing reactive and direct dyes. It qualifies for HTS 2921.45.90.90 as an 'other' derivative of 1-naphthylamine per Chapter 29 amine-function priority. The molecule's primary aromatic amine defines its tariff classification.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Submit IUPAC name and CAS (89-37-2) matching; hydroxy group doesn't override amine-function classification
• Watch for CBP scrutiny on multi-function compounds—provide expert opinion letter affirming Chapter 29 placement
• Package with anticaking agents only if necessary for preservation (Chapter 29 note f); excess additives trigger reclassification