Potassium 4-Sulfobenzoate from Germany
Potassium 4-sulfobenzoate (p-sulfobenzoic acid potassium salt) serves as a reactive intermediate in azo dye coupling and sulfonated drug synthesis. Specifically listed under HTS 2916.39.04.00 among aromatic monocarboxylic acid sulfonated derivatives.
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
• Counterion analysis required; sodium salt would classify under 2916.39.2500
• Dust hazard precautions needed; use anti-dusting agent only if per chapter note (g)
• Solubility testing documentation helps distinguish from insoluble sulfonates