Calcium Dodecylbenzene Sulfonate from Mexico
Calcium salt form used as corrosion inhibitor in lubricants and overbased detergents. Still classifies as anionic surfactant under 3402.31.10.00 despite end-use. Meets surface activity tests.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify TBN (total base number) if overbased variety
• Separate from petroleum sulfonates via origin certificates