8-Amino-1-naphthalenesulfonic acid (Schaeffer's Acid) from Japan
Schaeffer's acid (8-Amino-1-naphthalenesulfonic acid) serves as a crucial intermediate for producing direct and reactive dyes, featuring an amino group ortho to the sulfonic acid on naphthalene. Classified under HTS 2921.45.10.00 as one of the specifically enumerated naphthalenesulfonic acid amines. Meets Chapter 29 criteria for separate chemically defined aromatic monoamines and derivatives.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include certificate of analysis confirming ≥97% purity and correct positional isomer to validate HTS specificity
• Label shipments with UN number for dangerous goods if hydrate form exceeds transport thresholds