Boron trifluoride tetrahydrofuran complex, is a colorless liquid that is commonly used as a colorless liquid that is commonly used as a Lewis acid catalyst in various organic reactions. It has a wide range of applications in the synthesis of pharmaceuticals, polymers, and other organic compounds. The BF3·THF complex is known for its ability to activate nucleophiles and facilitate reactions such as Friedel-Crafts acylation and alkylation. It is also used as a reagent in the preparation of boron-containing compounds. Overall, it plays a crucial role in organic chemistry, providing a versatile tool for the formation of new carbon-carbon and carbon-heteroatom bonds.

SynonymBF3·THF, Boron trifluoride THF complex
CAS no.462-34-0
EINECS no.207-325-9
Molecular formulaBF· THF
Molecular weight139.91


Boron trifluoride tetrahydrofuran complex is produced by purging of BF3 gas into tetrahydrofuran at controlled rate of temperature & pressure.


Reactant or reagent involved in:
Deoxofluorination of alcohols and carbonyls
Synthesis of Methacrylate-PEG-Methacrylate-boron trifluoride self-doped gel polymer electrolytes
Hydroboration-oxidation of Divinylferrocene
Reagent involved in the synthesis of biologically active molecules such as:
NK-1 receptor antagonists
Complex polyketide natural products
Selective serotonin reuptake inhibitors
Used extensively as a polymerization initiator.


AppearanceClear light brown liquid, darken on storage
Boron Trifluoride Content (By Fluorine)%Min 45.0
Boron Trifluoride Content (By Boron)%Min 45.0
Typical Property
Specific Gravitygm/ml1.25 – 1.27
Note: Not reported on COA


35 Liter HDPE Jerrycan and 200 kg MS-HDPE composite drums


Store at room temperature in a well-ventilated place; Keep the container tightly closed.

REACH Status

Not registered.

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