Tetrahydrofuran (THF) from Canada
Tetrahydrofuran is a saturated heterocyclic compound containing a five-membered furan ring with one oxygen hetero-atom, used as a solvent in chemical reactions and polymer manufacturing. It falls under HTS 2932.19.51.00 as a hydrogenated furan ring compound with oxygen hetero-atom only. This classification covers unfused furan ring structures per Chapter 29 notes.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096.3%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
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide Certificate of Analysis confirming purity >99% and absence of impurities to verify chemical identity under Chapter 29 note (a)
• Ensure proper UN 2924 hazardous material labeling and shipping papers for flammable liquid Class 3
• Avoid misclassification as mixtures; pure THF qualifies, but solvent blends may shift to Chapter 38