5-Amino-2-naphthalenesulfonic Acid Monopotassium Salt from Japan
Potassium salt of Laurent's acid (5-Amino-2-naphthalenesulfonic acid) used in specific dye formulations requiring potassium counterions. Falls under HTS 2921.45.10.00 per explicit listing and Chapter note classifying salts with parent organic compound. Chemically defined aromatic amine derivative.
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
• Certificate must specify counterion (K+) and molar ratio to validate HTS salt classification
• Check potassium import restrictions; may require additional fertilizer/chemical permits