2-Methyltetrahydrofuran Bio-Based from China
2-Methyltetrahydrofuran (2-MeTHF) is a five-membered oxygen heterocyclic derived from renewable furfural, used as green solvent replacing THF in pharma manufacturing. Bio-based variants maintain identical chemical structure qualifying under 2932.99.90.90. Chemically defined heterocyclic compound per Chapter 29 definitions.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Carbon-14 dating certificates validate bio-based claims for potential duty preferences
• Chiral purity documentation required if enantiomerically enriched for pharma use
• Furfural odor specifications must meet <10ppm for solvent grade acceptance