Dinonylnaphthalene Sulfonic Acid from Japan
Dinonylnaphthalene sulfonic acid serves as extractant in hydrometallurgy and lube oil additives. Sulfonated phenolic derivative containing only sulfo groups, classified HTS 2908.99.1500 when >90% pure.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Acid number 95-105 mg KOH/g specification; stable >6 months certification
• Pitfall: Solvent-dissolved forms (50% in kerosene) reclassified to Chapter 38