Petroleum Sulfonic Acid Sodium Salt from Mexico
Mahogany sulfonates from petroleum refining, aromatic fraction, classified HTS 2904.10.32.00 per note 3. Used as emulsifiers in oilfield chemicals.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Sulfonate content >50% required for chapter 29 classification
• AN (acid number) 10-30 specification verification
• Dark color natural; not purity indicator