1-Naphthylamine-8-sulfonic Acid (Peri Acid) from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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