Petroleum Sulfonic Acid Sodium Salt from Japan
Sodium salt of petroleum sulfonic acids derived from alkylated aromatic hydrocarbons, containing only sulfo groups. Qualifies under HTS 2904.10.5000 as sulfonated hydrocarbon derivative salt. Used in metalworking fluids and rust inhibitors.
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
• Provide average molecular weight and sulfonation degree; >450 avg MW may trigger Chapter 27 review
• Oil content <30% required; higher suggests Chapter 27 classification as petroleum derivative
• Batch certificates must specify 'mahogany' vs 'green' sulfonates for proper identification