Chemical Property of Boron trifluoride
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Chemical Property:
- Appearance/Colour:clear to pale yellow liquid
- Vapor Pressure:>1 mmHg at 20 °C
- Melting Point:-20 C
- Refractive Index:n20/D 1.38
- Boiling Point:59 C at 4.00 hPa
- Flash Point:4 ºC
- PSA：0.00000
- Density:0.87
- LogP:0.87980
- Storage Temp.:2-8°C
- Sensitive.:Moisture Sensitive
- Water Solubility.:MAY DECOMPOSE
- Hydrogen Bond Donor Count:0
- Hydrogen Bond Acceptor Count:3
- Rotatable Bond Count:0
- Exact Mass:68.0045147
- Heavy Atom Count:4
- Complexity:8
- Transport DOT Label:Poison Gas Corrosive
- Purity/Quality:
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99.999% *data from raw suppliers
Boron trifluoride electronic grade, ≥99.99% *data from reagent suppliers
Safty Information:
- Pictogram(s):
- Hazard Codes:T+,C,T,F
- Statements:
14-26-35-39/23/24/25-24/25-11-67-41-10-37-22
- Safety Statements:
9-26-28-36/37/39-45-28A-16
- MSDS Files:
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SDS file from LookChem
Useful:
- Chemical Classes:Toxic Gases & Vapors -> Corrosive Gases
- Canonical SMILES:B(F)(F)F
- Inhalation Risk:A harmful concentration of this gas in the air will be reached very quickly on loss of containment.
- Effects of Short Term Exposure:The substance is corrosive to the eyes, skin and respiratory tract. Inhalation of high concentrations may cause lung oedema, but only after initial corrosive effects on the eyes and the upper respiratory tract have become manifest. Rapid evaporation of the liquid may cause frostbite.
- Effects of Long Term Exposure:The substance may have effects on the kidney, lungs and teeth and bones (fluorosis).
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Description
Boron trifluoride is the inorganic compound with the formula BF3. It is a highly toxic, colorless and nonflammable gas with a penetrating and pungent odor. It dissolves quickly in water and any organic compounds containing nitrogen or oxygen. It can be slowly hydrolyzed by cold water to give off hydrofluoric acid, and can also hydrolyzes to form white dense fumes in moist air. Its vapors are heavier than air. Inhaling the gas will irritate the respiratory system and burns can result if the gas touches the skin in high concentrations.
boron trifluoride lewis structure
Boron trifluoride is most importantly used as a reagent, typically as a Lewis acid, to catalyze such diverse operations as isomerization, alkylation, polymerization, esterfication, condensation, cyclization, hydration dehydration, sulfonation, desulfurization nitration, halogenation oxidation and acylation. Besides, it can also be used as a versatile building block for other boron compounds.
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Physical properties
Colorless gas; pungent suffocating odor; density 2.975 g/L; fumes in moist air; liquefies at -101°C; solidifies at -126.8°; vapor pressure at -128°C is 57.8 torr; critical temperature -12.2°C; critical pressure 49.15 atm; critical volume 115 cm3/mol; soluble in water with partial hydrolysis; solubility in water at 0°C 332 g/100g; also soluble in benzene, toluene, hexane, chloroform and methylene chloride; soluble in anhydrous concentrated sulfuric acid.
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Uses
Boron trifluoride is used as a catalyst for polymerizations, alkylations, and condensation reactions; To protect molten magnesium and its alloys from oxidation; as a gas flux for internal soldering or brazing; in ionization chambers for the detection of weak neutrons; and as a source of B10 isotope. ?By far the largest application of boron trifluoride is in catalysis with and without promoting agents.
