Gamma-Butyrolactone (GBL)
Gamma-butyrolactone is a five-membered lactone ring heterocyclic with oxygen hetero-atom, aromatic under HTS 2932.99.70.00. Used as solvent and precursor to GHB.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as lactone specifically
Lactones have earlier specific subheading in 2932 before 'other' provisions.
If industrial solvent mixtures
Commonly imported diluted; classified as preparations if >2 components.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• DEA List I chemical; requires import permit and advance notification
• End-use statement mandatory to prevent diversion to controlled substances
• Include stabilizer identification if present
Related Products under HTS 2932.99.70.00
Dioxolane
Dioxolane is a five-membered heterocyclic ring compound containing two oxygen hetero-atoms, classified under HTS 2932.99.70.00 as an aromatic heterocyclic compound with oxygen hetero-atoms only. It is commonly used as a solvent and intermediate in organic synthesis.
1,4-Dioxane
1,4-Dioxane is a six-membered heterocyclic ring with two oxygen atoms in 1,4-positions, aromatic heterocyclic compound under HTS 2932.99.70.00. Widely used as an industrial solvent despite regulatory concerns.
Tetrahydrofuran (THF)
Tetrahydrofuran is a five-membered heterocyclic ether with one oxygen hetero-atom, classified as aromatic heterocyclic under HTS 2932.99.70.00. Essential solvent in pharmaceutical and polymer manufacturing.
Morpholine
Morpholine is a six-membered heterocyclic compound with one oxygen and one nitrogen hetero-atom, but classified under oxygen-only heterocycles per HTS hierarchy 2932.99.70.00 when oxygen function predominates. Used in rubber vulcanization and corrosion inhibition.
Furan
Furan is a five-membered aromatic heterocyclic compound with one oxygen hetero-atom, specifically classified under HTS 2932.99.70.00. Used as solvent and in resin production.
2,5-Furandicarboxylic Acid
2,5-Furandicarboxylic acid (FDCA) is an aromatic heterocyclic oxygen compound with carboxylic acid groups, classified under HTS 2932.99.70.00. Bio-based alternative to terephthalic acid for PET production.