Tetrahydrofuran (THF) 99.9% Pure ACS Reagent Grade
Tetrahydrofuran is a colorless, volatile liquid heterocyclic compound containing a saturated five-membered furan ring with one oxygen hetero-atom. It is classified under HTS 2932.11.00.00 as a chemically defined compound with an unfused hydrogenated furan ring structure. Primarily used as a versatile aprotic solvent in chemical reactions and polymer processing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with stabilizers or other solvents for specific industrial formulations
Mixtures of organic solvents not chemically defined as single compounds fall under Chapter 38 prepared chemical mixtures.
If imported as a solution in water or alcohol for safe transport
Per Chapter 29 note (e), THF dissolved in solvents solely for safety/transport may remain classified here, but complex mixtures shift to other acyclic ether headings.
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Import Tips & Compliance
• Verify purity certificates and SDS documentation to meet EPA and TSCA requirements; ensure proper UN-approved packaging for flammable liquids (UN2056)
• Common pitfall: inadequate labeling of flash point and vapor pressure
Related Products under HTS 2932.11.00.00
Industrial Grade Tetrahydrofuran (THF) 99.5% Purity
Industrial-grade THF is a high-purity cyclic ether used extensively in the production of polytetramethylene ether glycol (PTMEG) for spandex fibers. It matches HTS 2932.11.00.00 due to its unfused tetrahydrofuran ring structure as a separate chemically defined organic compound. Essential in pharmaceutical extraction and PVC cement formulations.
Anhydrous Tetrahydrofuran (THF) Stabilized with BHT
Anhydrous THF with butylated hydroxytoluene (BHT) stabilizer prevents peroxide formation during storage and transport. Classified under HTS 2932.11.00.00 per Chapter note (f) allowing stabilizers necessary for preservation without changing the compound's nature. Used in Grignard reactions and organometallic synthesis.
Tetrahydrofuran Solvent for HPLC Grade Analysis
HPLC-grade THF is ultra-high purity (99.9%+) with low water and residue content for chromatography applications. It falls under HTS 2932.11.00.00 as a pure chemically defined heterocyclic compound with hydrogenated furan ring. Ideal for mobile phase in reverse-phase HPLC separations.
Tetrahydrofuran Bulk Drum for PTMEG Production
Bulk THF supplied in 200L drums for polymerization to PTMEG used in elastomers like Lycra. Precisely matches HTS 2932.11.00.00 definition of tetrahydrofuran as unfused hydrogenated furan ring compound. Critical raw material in polyurethane and fiber manufacturing.
Peroxide-Free Tetrahydrofuran with Antioxidant
Specially treated THF guaranteed peroxide-free through added antioxidants, safe for long-term storage. HTS 2932.11.00.00 applies per note (f) for added stabilizers essential for preservation. Used in battery electrolyte formulations and pharmaceutical processing.
Tetrahydrofuran NMR Grade Spectroscopic Solvent
NMR-grade THF with 99.96% purity and deuterated options available for spectroscopy. Classified under HTS 2932.11.00.00 as pure tetrahydrofuran meeting Chapter 29 chemical definition. Deuterated version remains classified here as isotopically substituted compound.