Gamma Acid (2-Amino-8-naphthol-6-sulfonic Acid) from Canada
Gamma acid functions as a dye coupler with amino, naphthol, and sulfonic acid groups, used in acid and direct dyes. As a pure organic compound with oxygen-function amino groups, it aligns with Chapter 29 scope. Falls under 2922.21.5000 for other such acids.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide molecular formula C10H9NO5S and structure diagram on commercial invoice
• Test for isomer purity to distinguish from 2922.21.1000 specified compounds