Oleum (Fuming Sulfuric Acid) from China
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 — China → United States
25%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 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