Gamma-Butyrolactone (GBL) from Germany
Gamma-butyrolactone is a five-membered lactone ring (cyclic ester) with oxygen hetero-atom, used as solvent and precursor. Falls under HTS 2932.99.90 as other oxygen heterocycles, distinguished from excluded cyclic esters of polyhydric alcohols.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• DEA List I chemical; requires importer registration and advance notice per 21 CFR 1310
• Lactone structure verified by IR spectroscopy; distinguish from polymer grades