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Boron trifluoride etherate

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CAS:109-63-7
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Boron trifluoride etherate Basic information
Toxicity Chemical Properties Usage Preparation
Product Name:Boron trifluoride etherate
Synonyms:borontrifluorideethyletherate(1:1);Borontrifluorideethylethercomplexcompound;diethylether-borontrifluoride;diethylethertrifluoroboranecomplex;ethane,1,1’-oxybis-,compd.withtrifluoroborane(1:1);ether,diethyl,borofluoride;Ethyl ether, compd. with boron fluoride (BF3 1:1);ethylether,cmpdwithboronfluoride(bf3)(1:1)
CAS:109-63-7
MF:C4H10BF3O
MW:141.93
EINECS:203-689-8
Product Categories:Industrial/Fine Chemicals;Organometallics;Boron Trifluorides;Boron Trihalides;B (Classes of Boron Compounds);Biochemistry;Reagents for Oligosaccharide Synthesis;Fluoro series;Fine Chemical
Mol File:109-63-7.mol
Boron trifluoride etherate Structure
Boron trifluoride etherate Chemical Properties
Melting point −58 °C(lit.)
Boiling point 126-129 °C(lit.)
density 1.15 g/mL(lit.)
vapor density 4.9 (vs air)
vapor pressure 4.2 mm Hg ( 20 °C)
refractive index n20/D 1.344(lit.)
Fp 118 °F
storage temp. 2-8°C
solubility Miscible with ether and alcohol.
form liquid
Specific Gravity1.126 (20/4℃)
color brown
explosive limit5.1-18.2%(V)
Water Solubility Reacts
Hydrolytic Sensitivity7: reacts slowly with moisture/water
Sensitive Moisture Sensitive
Merck 14,1350
BRN 3909607
Stability:Stable. Highly flammable. May form explosive peroxides in contact with air or oxygen. Reacts exothermically with water to form extremely flammable diethyl ether and toxic, corrosive boron trifluoride hydrates. Also incompatible with bases, amines, alkali metals.
InChIKeyMZTVMRUDEFSYGQ-UHFFFAOYSA-N
CAS DataBase Reference109-63-7(CAS DataBase Reference)
NIST Chemistry ReferenceBoron trifluoride etherate(109-63-7)
EPA Substance Registry SystemBoron, trifluoro[1,1'-oxybis[ethane]]-, (T-4)- (109-63-7)
Safety Information
Hazard Codes T,C
Risk Statements 10-14-20/22-35-48/23-34-14/15-23-22
Safety Statements 16-23-26-36/37/39-45-8-28A-43
RIDADR UN 2604 8/PG 1
WGK Germany 3
10
Autoignition Temperature185 °C DIN 51794
TSCA Yes
HazardClass 8
PackingGroup I
HS Code 29319090
Hazardous Substances Data109-63-7(Hazardous Substances Data)
MSDS Information
ProviderLanguage
SigmaAldrich English
ACROS English
ALFA English
Boron trifluoride etherate Usage And Synthesis
ToxicitySee boron trifluoride.
Chemical PropertiesColorless to brown fuming liquid.
Usage
  • A catalyst for synthetic rubber, resin, paints, and so on.
  • A catalyst for alkylation and condensation reaction in organic synthesis such as polybutadiene, polyoxymethylene, coumarone, synthetic resin, etc.
  • A basic ingredient of producing high quality borohydride fuel and extracting the isotope of boron.
  • A curing agent for epoxy resin.
  • A catalyst of organic synthesis (acetylation, alkylation, polymerization, dehydration and condensation reaction) and a common analytical reagent.
Preparation
  • Boron trifluoride gas, produced by heating the sulfuric acid, calcium fluoride (fluorite) and boric acid together, reacts with ether boron to produce the trifluoride etherate crude product, thus we can refine it to get the finished product. The consumption of raw material is as followed: boric acid (≥98%), 560kg/t; calcium fluoride(≥90%) 1150kg/t; fuming sulfuric acid (104.5%), 4100kg/t; ether(≥99%) 725kg/t.
  • In absorption method shown in the chemical equations as followed, diethyl ether absorb boron trifluoride gas, produced by heating the sulfuric acid, calcium fluoride (fluorite) and boric acid together, to produce trifluoride etherate crude complex compound by vacuum distillation.
                 3H2SO4+2H33BO3+3CaF2→2BF3+3CaSO4+6H2O
                 BF3+(C2H5)2O→(C2H5)2O•BF3
Chemical PropertiesColorless to brown fuming liquid
Chemical PropertiesBoron trifluoride etherates: (compounded with methyl ether) is moisture-sensitive, corrosive, flammable liquid.
Physical propertiesFuming liquid; stable at ambient temperatures but hydrolyzed on exposure to moist air; density 1.125 g/mL; refractive index 1.348; solidifies at -60.4°C; boils at 125.7°C; flash point (open cup) 147°F (68.8°C); decomposes in water.
UsesCatalyst in acetylation, alkylation, polymerization, dehydration, and condensation reactions.
PreparationBoron trifluoride etherate is prepared by the reaction of vapors of boron trifluoride with that of anhydrous diethyl ether:
BF3 (g) + (C2H5)2O (g) → (C2H5)2O?BF3.
General DescriptionBoron trifluoride etherate is a fuming liquid. Boron trifluoride etherate may be corrosive to skin, eyes and mucous membranes. Boron trifluoride etherate may be toxic by inhalation. Upon exposure to water Boron trifluoride etherate may emit flammable and corrosive vapors. Boron trifluoride etherate is used as a catalyst in chemical reactions.
Air & Water ReactionsHighly flammable. Fuming liquid, immediately hydrolyzed by moisture in air to form hydrogen fluoride [Merck 11th ed. 1989].
Reactivity ProfileBoron trifluoride diethyl ether complex is a stable, highly flammable, colourless to brown fuming, corrosive liquid with a sharp pungent odour. It forms explosive peroxides in contact with air or oxygen. It reacts exothermically with water to form extremely flammable diethyl ether and toxic, corrosive boron trifluoride hydrates. The chemical is incompatible with bases, amines, and alkali metals. It immediately gets hydrolysed by moisture in air to form hydrogen fluoride. Boron trifluoride diethyl ether has applications in chemical laboratory as a catalyst in chemical reactions.
HazardThe compound is highly toxic by inhalation. Skin contact causes burns.
Health HazardMay cause toxic effects if inhaled or ingested/swallowed. Contact with substance may cause severe burns to skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Fire HazardFlammable/combustible material. May be ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Potential ExposureUsed as a catalyst.
ShippingDiethyl: UN2604 Boron trifluoride diethyl etherate, Hazard class: 8; Labels: 8—Corrosive material, 3—Flammable liquid. Dimethyl: UN2965 Boron trifluoride dimethyl etherate, Hazard class: 4.3; Labels: 4.3— Dangerous when wet, 8—Corrosive material, 3— Flammable liquid.
IncompatibilitiesReacts with air forming corrosive hydrogen fluoride vapors. Incompatible with oxidizers (may cause fire and explosion), water, steam or heat, forming corrosive and flammable vapors. Peroxide containing etherate reacts explosively with aluminum lithium hydride, magnesium tetrahydroaluminate. Mixtures with phenol react explosively with 1,3-butadiene. Presumed to form explosive peroxides.
Tag:Boron trifluoride etherate(109-63-7) Related Product Information
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