Tetrahydrofuran (THF) from China
Tetrahydrofuran is a five-membered heterocyclic ether with one oxygen atom, classified in HTS 2932.99.61.00 per additional U.S. note 3 to section VI. Widely used as a solvent in Grignard reactions and polymer synthesis.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Classify as UN1993 flammable liquid for proper shipping documentation
• Maintain stabilizer certificates as THF forms peroxides upon storage
• Comply with peroxide former handling regulations during import