Description

Boron Trifluoride Diethyl Etherate (CAS 109-63-7) is a highly reactive and versatile complex of boron trifluoride (BF₃) and diethyl ether, with the molecular formula C₄H₁₀BF₃O. This clear, colorless to pale yellow liquid is widely used as a Lewis acid catalyst in organic synthesis due to its strong electrophilic properties. It is moisture-sensitive and typically handled under inert conditions to prevent decomposition. Ideal for Friedel-Crafts alkylations, acylations, and polymerization reactions, this reagent is a staple in pharmaceutical, agrochemical, and materials science research. Packaged in amber glass bottles under nitrogen to ensure stability and purity, it is available in various quantities to meet both laboratory and industrial-scale demands.

Properties

• CAS Number: 109-63-7
• Complexity: 19.1
• IUPAC Name: ethoxyethane;trifluoroborane
• InChI: InChI=1S/C4H10O.BF3/c1-3-5-4-2;2-1(3)4/h3-4H2,1-2H3;
• InChI Key: KZMGYPLQYOPHEL-UHFFFAOYSA-N
• Exact Mass: 142.0776796
• Molecular Formula: C4H10BF3O
• Molecular Weight: 141.93
• SMILES: B(F)(F)F.CCOCC
• Topological: 9.2
• Monoisotopic Mass: 142.0776796
• Physical Description: Boron trifluoride diethyl etherate is a fuming liquid. It may be corrosive to skin, eyes and mucous membranes. This material may be toxic by inhalation. Upon exposure to water it may emit flammable and corrosive vapors. It is used as a catalyst in chemical reactions.
• Color/Form: Fuming liquid
• Boiling Point: 125.7 °C
• Melting Point: -60.4 °C
• Flash Point: 47.8 °C
• Solubility: Very soluble in ether, alcohol
• Density: 1.125 at 25 °C/4 °C
• Vapor Pressure: 4.2 [mmHg]
• Stability/Shelf Life: …Immediately hydrolyzed by moisture in air.
• Refractive Index: Index of refraction: 1.348 at 20 °C/D
• Synonyms: Boron trifluoride etherate, 109-63-7, Boron trifluoride ethyl ether, Boron trifluoride-diethyl etherate, Boron fluoride ethyl ether, Boron trifluoride-ethyl ether, TRIFLUOROBORON ETHERATE, Boron fluoride diethyl etherate, Trifluoroborane diethyl etherate, Bf3ether complex, Trifluorobon etherate, Ethyl ether borofluoride, Ether, diethyl, borofluoride, Boron fluoride ethyl etherate, Diethyl ether boron trifluoride, Diethyl ether–boron trifluoride, HSDB 5393, Trifluoroborondiethyl ether complex, Boron fluoride ethyl ether complex, Borone trifluoride diethyl etherate, (DIETHYL ETHER)TRIFLUOROBORON, EINECS 203-689-8, TRIFLUORO(DIETHYL ETHER)BORON, Boron fluoride diethyl ether compound, Boron trifluoride ethyl ether complex, BORON TRIFLUORIDE MONOETHERATE, Ethyl ether boron trifluoride complex, Boron trifluoride ethyl ether (1:1), BORON TRIFLUORIDE-ETHYL ETHERATE, BORON TRIFLUORIDE ETHERATE (1:1), Trifluoroborane1,1’oxybis(ethane) (1:1), BORON FLUORIDE-DIETHYL ETHER COMPOUND, BORON TRIFLUORIDE-ETHYL ETHER (1:1), DIETHYL ETHER-TRIFLUOROBORANE (1:1), BORON TRIFLUORIDE-DIETHYL ETHER COMPLEX, Boron trifluoride diethyl ether complex (1:1), BORON TRIFLUORIDE-DIETHYL ETHER (1:1), EC 203-689-8, ETHYL ETHER, COMPOUND WITH BF3 (1:1), BORON TRIFLUORIDE-DIETHYL ETHER 1:1 COMPLEX, DIETHYL ETHER COMPOUND WITH BORON TRIFLUORIDE, Boron, trifluoro(1,1′-oxybis(ethane))-, (beta-4)-, Borane, trifluoro, cmpd with 1,1’oxybis(ethane) (1:1), Borane, trifluoro-, cmpd with 1,1′-oxybis(ethane) (1:1), BORON FLUORIDE (BF3), COMPOUND WITH ETHYL ETHER (1:1), ETHYL ETHER, COMPOUND WITH BORON FLUORIDE (BF3) (1:1), ETHANE, 1,1′-OXYBIS-, COMPOUND WITH TRIFLUOROBORANE (1:1), (t-4)-trifluoro(1,1′-oxybis(ethane))boron, 422vhh19it, boron fluoride etherate, boron fluoride monoetherate, boron fluoride-ethyl etherate, boron trifluoride diethyl etherate, boron trifluoride etherate [mi], boron trifluoride ethyl etherate, boron trifluoride ethyl etherate (1:1), boron, trifluoro(1,1′-oxybis(ethane))-, (t-4)-, boron, trifluoro[1,1′-oxybis[ethane]]-, (t-4)-, ethyl ether, cmpd with boron fluoride (bf3) (1:1), trifluoroborane-1,1′-oxybis(ethane) (1:1), trifluoroborane-1,1′-oxybis[ethane] (1:1), trifluoroboron-diethyl ether (1:1), un-2604, un2604, Borontrifluorideetherate, BF3.Et2O, ethoxyethane;trifluoroborane, 174674-80-7, ethoxyethane; trifluoroborane, boron trifluoride diethyl ether, boron trifluoride-diethyl ether, BF3 ethyl ether, BF3 ether, trifluoroborane ether, borontrifluride etherate, boron trifluorideetherate, borontriflouride etherate, borontrifluoride-etherate, boron trifloride etherate, boron trifluride etherate, Boron Trifluorid etherate, boron trifiuoride etherate, boron triflouride etherate, boron trifluoride-etherate, trifluoroboron diethylether, BF3 Et2O, BF3 OEt2, BF3.OEt2, Et2O BF3, trifluoroborane diethylether, Ethoxyethane trifluoroborane, borontrifluoride diethylether, diethyl ether trifluoroborane, SCHEMBL40006, boron trifluoride.diethylether, Ethyl ether, compound with bf3, Boron trifluoride diethyletherate, boron trifluride diethyl etherate, boron triflouride diethyl etherate, BF3 O(C2H5)2, CHEBI:231495, KZMGYPLQYOPHEL-UHFFFAOYSA-N, DTXSID601015537, boron trifluoride diethyl ether ate, ethoxyethane; tris(fluoranyl)borane, AKOS009158121, FB29693, B0527, A802065, Q10866254

Application

Boron Trifluoride Diethyl Etherate is extensively employed as a catalyst in organic synthesis, particularly for Friedel-Crafts reactions, where it facilitates alkylation and acylation of aromatic compounds. It is also used in the polymerization of olefins and epoxides, as well as in the preparation of boron-containing compounds. Researchers value its ability to promote complex transformations under mild conditions, making it indispensable in pharmaceutical and fine chemical production.

Safety and Hazards

GHS Hazard Statements

• H226: Flammable liquid and vapor [Warning Flammable liquids]
• H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]

Precautionary Statements

• P210, P233, P240, P241, P242, P243, P260, P264, P264+P265, P273, P280, P301+P330+P331, P302+P361+P354, P303+P361+P353, P304+P340, P305+P354+P338, P316, P317, P321, P363, P370+P378, P403+P235, P405, and P501

Hazard Classes and Categories

• Flam. Liq. 3 (87.5%)
• Acute Tox. 4 (33.6%)
• Skin Corr. 1B (99.1%)
• Eye Dam. 1 (58.6%)
• Acute Tox. 2 (14.7%)
• Acute Tox. 4 (81.5%)
• STOT RE 1 (98.3%)
• Aquatic Chronic 3 (12.9%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.