Refined High Acid Number Naphthenic Acid from Germany
Distilled naphthenic acid with acid number 200-250 mg KOH/g, used in metalworking fluids and rubber additives. Falls under HTS 3824.99.7510 as their water-insoluble salts are separately classified. Key for emulsifiers in oil-based formulations.
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
• Test and certify acid number via titration; provide neutralization value on commercial invoice
• Ensure DOT hazardous material classification for corrosive liquids
• Watch for reclassification if metal salts present