K Acid (1-Naphthylamine-8-sulfonic Acid) from Germany
K Acid acts as a dye intermediate with amino and sulfonic groups on 1-naphthol structure. Meets definition of oxygen-function amino-compound under Chapter 29 notes. HTS 2922.21.5000 covers this as other aminohydroxynaphthalenesulfonic acid.
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
• Certify <0.1% heavy metals per dye industry standards
• Use 'pure' vs 'technical grade' distinction on labels
• Avoid generic 'aromatic sulfonic acid' descriptions