Petroleum Sulfonic Acid Sodium Salt from Canada
Mahogany sulfonates from sulfonation of petroleum alkylbenzenes (phenolic), containing only sulfo groups, used as emulsifiers in oil drilling. HTS 2908.99.1500 applies to these chemically defined salts not qualifying as mixtures.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Submit average molecular weight analysis; API gravity certification for petroleum-derived
• Pitfall: High viscosity grades often misdeclared as lubricants under Chapter 27