Morpholine from Mexico
Morpholine features a six-membered heterocyclic ring with one oxygen and one nitrogen atom, but classified under oxygen heterocycle provisions of HTS 2932.99.61.00 when specified in additional U.S. note 3. Used in rubber curing and corrosion inhibition.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Provide end-use certificates if imported for rubber accelerator applications
• Ensure proper ventilation labeling for amine odor during transport
• Verify REACH compliance documentation for EU-origin morpholine