Oleum (Fuming Sulfuric Acid) from Canada
Oleum, a solution of sulfur trioxide in sulfuric acid, appearing as fuming sulfuric acid used in organic synthesis and explosives manufacturing. Classified under HTS 2807.00.00.00 explicitly as oleum, a chemically pure form per Chapter 28 notes. It is handled with extreme care due to its reactivity.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Require Material Safety Data Sheets (MSDS) confirming SO3 content for classification; use UN-approved acid-resistant containers
• Pitfall: confusing with pure SO3, which goes to 2811.29