1-(Phenylamino)naphthalin-8-sulfonic Acid (Naphthol AS) from Canada
Naphthol AS is a substituted naphthylamine derivative used as a dye coupler in pigment printing. It falls under HTS 2921.45.90.90 as an 'other' derivative featuring the naphthylamine core with phenylamino substitution. The classification adheres to Chapter 29's amine-function provisions.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide synthesis route documentation showing naphthylamine origin
• Test for free naphthylamine content (<20ppm) to meet safety import standards
• Label with GHS hazard pictograms; sensitizing properties require special handling manifests