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Boron trifluoride information


Boron trifluoride
Boron trifluoride in 2D
Boron trifluoride in 2D
Boron trifluoride in 3D
Boron trifluoride in 3D
Names
IUPAC name
Boron trifluoride
Systematic IUPAC name
Trifluoroborane
Other names
Boron fluoride, Trifluoroborane
Identifiers
CAS Number
  • 7637-07-2 checkY
  • 13319-75-0 (dihydrate) checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:33093 checkY
ChemSpider
  • 6116 checkY
ECHA InfoCard 100.028.699 Edit this at Wikidata
EC Number
  • 231-569-5
PubChem CID
  • 6356
RTECS number
  • ED2275000
UNII
  • 7JGD48PX8P ☒N
UN number compressed: 1008.
boron trifluoride dihydrate: 2851.
CompTox Dashboard (EPA)
  • DTXSID7041677 Edit this at Wikidata
InChI
  • InChI=1S/BF3/c2-1(3)4 checkY
    Key: WTEOIRVLGSZEPR-UHFFFAOYSA-N checkY
SMILES
  • FB(F)F
Properties
Chemical formula
 BF3
Molar mass 67.82 g/mol (anhydrous)
103.837 g/mol (dihydrate)
Appearance colorless gas (anhydrous)
colorless liquid (dihydrate)
Odor Pungent
Density 0.00276 g/cm3 (anhydrous gas)
1.64 g/cm3 (dihydrate)
Melting point −126.8 °C (−196.2 °F; 146.3 K)
Boiling point −100.3 °C (−148.5 °F; 172.8 K)
Solubility in water
 exothermic decomposition [1] (anhydrous)
very soluble (dihydrate)
Solubility soluble in benzene, toluene, hexane, chloroform and methylene chloride
Vapor pressure >50 atm (20 °C)[2]
Dipole moment
 0 D
Thermochemistry
Heat capacity (C)
 50.46 J/(mol·K)
Std molar
entropy (S⦵298)
 254.3 J/(mol·K)
Std enthalpy of
formation (ΔfH⦵298)
 −1137 kJ/mol
Gibbs free energy (ΔfG⦵)
 −1120 kJ/mol
Hazards[4][5]
GHS labelling:
Pictograms
 Press. Gas Acute Tox. 2 Skin Corr. 1A GHS08: Health hazard
Signal word
 Danger
Hazard statements
 H280, H314, H330, H335, H373
Precautionary statements
 P260, P280, P303+P361+P353, P304+P340, P305+P351+P338, P310, P403+P233
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazards (white): no code
3
0
1
Flash point Nonflammable
Lethal dose or concentration (LD, LC):
LC50 (median concentration)
 1227 ppm (mouse, 2 hr)
39 ppm (guinea pig, 4 hr)
418 ppm (rat, 4 hr)[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 C 1 ppm (3 mg/m3)[2]
REL (Recommended)
 C 1 ppm (3 mg/m3)[2]
IDLH (Immediate danger)
 25 ppm[2]
Safety data sheet (SDS) ICSC 0231
Related compounds
Other anions
  • Boron trichloride
  • Boron tribromide
  • Boron triiodide
Other cations
  • Aluminium fluoride
  • Gallium(III) fluoride
  • Indium(III) fluoride
  • Thallium(III) fluoride
Related compounds
 Boron monofluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references

Boron trifluoride is the inorganic compound with the formula BF3. This pungent, colourless, and toxic gas forms white fumes in moist air. It is a useful Lewis acid and a versatile building block for other boron compounds.

  1. ^ Prudent Practices in the Laboratory. 16 August 1995. doi:10.17226/4911. ISBN 978-0-309-05229-0. Archived from the original on 14 December 2014. Retrieved 7 May 2018. {{cite book}}: |website= ignored (help)
  2. ^ a b c d NIOSH Pocket Guide to Chemical Hazards. "#0062". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ "Boron trifluoride". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ Index no. 005-001-00-X of Annex VI, Part 3, to Regulation (EC) No 1272/2008 of the European Parliament and of the Council of 16 December 2008 on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006. OJEU L353, 31.12.2008, pp 1–1355 at p 341.
  5. ^ "Boron trifluoride", Pocket Guide to Chemical Hazards, U.S. Department of Health and Human Services (NIOSH) Publication No. 2005-149, Washington, DC: Government Printing Office, 2005, ISBN 9780160727511.
  6. ^ Inc, New Environment. "New Environment Inc. - NFPA Chemicals". www.newenv.com. Archived from the original on 27 August 2016. Retrieved 7 May 2018. {{cite web}}: |last= has generic name (help)

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Boron trifluoride

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Boron trifluoride is the inorganic compound with the formula BF3. This pungent, colourless, and toxic gas forms white fumes in moist air. It is a useful...

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Boron trifluoride etherate

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Boron trifluoride etherate, strictly boron trifluoride diethyl etherate, or boron trifluoride–ether complex, is the chemical compound with the formula...

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Boron monofluoride

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number of fluorine atoms, compared with boron trifluoride. It can also be called a borylene, as it contains boron with two unshared electrons. BF is isoelectronic...

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Boron

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example, fluoride (F−) and boron trifluoride (BF3) combined to give the tetrafluoroborate anion, BF4−. Boron trifluoride is used in the petrochemical...

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Trifluoride

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called Swart's reagent Arsenic trifluoride, AsF3 Berkelium trifluoride, BkF3 Bismuth trifluoride, BiF3 Boron trifluoride, BF3, a pungent colourless toxic...

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Boron nitride

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Boron nitride is a thermally and chemically resistant refractory compound of boron and nitrogen with the chemical formula BN. It exists in various crystalline...

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Boron compounds

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example, fluoride (F−) and boron trifluoride (BF3) combined to give the tetrafluoroborate anion, BF4−. Boron trifluoride is used in the petrochemical...

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Coordinate covalent bond

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atom, and boron trifluoride, a Lewis acid by virtue of the boron atom having an incomplete octet of electrons. In forming the adduct, the boron atom attains...

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Chemical polarity

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arrangement of polar bonds in a more complex molecule. For example, boron trifluoride (BF3) has a trigonal planar arrangement of three polar bonds at 120°...

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Acid

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form a covalent bond with an electron pair. An example is boron trifluoride (BF3), whose boron atom has a vacant orbital that can form a covalent bond by...

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Nitrogen trifluoride

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temperatures, reacting to produce nitrogen gas, boron trifluoride, and hydrofluoric acid. Nitrogen trifluoride is primarily used to remove silicon and silicon-compounds...

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Chemical bond

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from the same one of the atoms involved in the bond. For example, boron trifluoride (BF3) and ammonia (NH3) form an adduct or coordination complex F3B←NH3...

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Diborane

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autocatalytic. Two laboratory methods start from boron trichloride with lithium aluminium hydride or from boron trifluoride ether solution with sodium borohydride...

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Aldol reaction

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carbonyls in the presence of a Lewis acid catalyst, such as boron trifluoride (as boron trifluoride etherate) or titanium tetrachloride. In the Stork enamine...

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Sodium tetrafluoroborate

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tetrafluoroborate is used in some fluxes used for brazing and to produce boron trifluoride. Sodium tetrafluoroborate can be prepared by neutralizing tetrafluoroboric...

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Acetonitrile

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ligands. It also forms Lewis adducts with group 13 Lewis acids like boron trifluoride. In superacids, it is possible to protonate acetonitrile. Acetonitrile...

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Ether

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as Lewis bases. For instance, diethyl ether forms a complex with boron trifluoride, i.e. borane diethyl etherate (BF3·O(CH2CH3)2). Ethers also coordinate...

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Boronic acid

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fluids. In this sequence the boronic ester allyl shift is catalyzed by boron trifluoride. In the second step the hydroxyl group is activated as a leaving group...

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Trigonal planar molecular geometry

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geometry. Examples of molecules with trigonal planar geometry include boron trifluoride (BF3), formaldehyde (H2CO), phosgene (COCl2), and sulfur trioxide...

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Boron trichloride

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Boron reacts with halogens to give the corresponding trihalides. Boron trichloride is, however, produced industrially by direct chlorination of boron...

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Fischer indole synthesis

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polyphosphoric acid and p-toluenesulfonic acid or Lewis acids such as boron trifluoride, zinc chloride, and aluminium chloride. Several reviews have been...

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Chemical substance

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be a metal, as exemplified by boron trifluoride etherate BF3OEt2, where the highly Lewis acidic, but non-metallic boron center takes the role of the "metal"...

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Aluminium fluoride

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bromide Aluminium iodide Other cations Boron trifluoride Gallium trifluoride Indium trifluoride Thallium trifluoride Related compounds Scandium(III) fluoride...

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Lewis acids and bases

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to represent a Lewis adduct, such as Me3B·NH3. Another example is boron trifluoride diethyl etherate, BF3·Et2O. In a slightly different usage, the center...

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Reactions of organocopper reagents

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are combined. In conjunction with Lewis acidic additives such as boron trifluoride etherate, these reagents are used for conjugate addition reactions...

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