About   |   More   |   Search
ChemLin Logo

Boron trifluoride

Properties, data and information sources.

 

Contents

Boron trifluoride is an inorganic chemical compound from the group of boron compounds. The four atoms of the planar BF3 all lie in one plane. The FBF bond angle is 120° and the BF bond distance is 131.3 pm.

 

Names and Identifiers

Name
Boron trifluoride
Formula
BF3
Molar mass
67.805 (g/mol)
CAS registry number
7637-07-2
EC number EINECS
231-569-5
InChI Key
WTEOIRVLGSZEPR-UHFFFAOYSA-N

Systematic name
Trifluoroborane

Other names, synonyms
Boron fluoride; Trifluoroboron; Trifluoroborane; Boron(III) fluoride

Trade names; preparations
ANCA 1040

 

Chemical formulas

Molecular formula and structural formula of Boron trifluoride:

 

Boron trifluoride

 

BF3

Mr = 67.8052 g/mol

Trifluoroborane
SMILES: B(F)(F)F

 

Data and Properties

In its pure form, boron trifluoride is a pungent-smelling gas that fumes in the air.

melting point
-126.8 °C
boiling point
-100.3 °C
density
0.00276 g cm-3 at 20 °C [g]
vapor pressure
28 bar at -30 °C
standard enthalpy of formation
-1136.0(8) kJ/mol at 25 °C [g]
standard entropie
254.3 J/(mol K) at 25 °C
Gibbs free energy
-1120 kJ/mol
heat capacity
50.64 J/(mol K)
critical points
Tc = -12.3 °C
dipole moment
0 D

 

Spectroscopic data:

SpectraBase (NMR, IR, FTIR, Raman, UV-Vis, MS ... spectra)
1xQNlwYjmoI
NIST IR-Spektrum
Boron trifluoride

 

Percentage and isotopic composition:

Mass-related elemental composition and isotope proportions of the compound Boron trifluoride - BF3 - calculated based on molecular mass.

Symbol
Element ENumber x
of atoms ExData of the element
and isotopes *Percentages
of isotopesPercentage of
Ex in formula massB
Boron1ΣAr = 10.81 u
10B: 10.01294 u [19,65 %]
11B: 11.00931 u [80,35 %] 
10B: 3.13275 %
11B: 12.80998 %
15.9427 %F
Fluorine3 Ar = 18.998403163 u
ΣAr = 56.995209489 u
19F: 18.9984 u [100 %] 
19F: 84.05727 %
84.0573 %

*) The third column lists the atomic masses or isotope masses of the elements involved and - in square brackets - the natural isotope composition.

 

More calculated data

The molar mass is M = 67.805209489 grams per mole.

The amount of substance in one kilogram of the substance is n = 14.748 mol.

The amount of substance in one gram of the substance is n = 0.015 mol.

Monoisotopic mass: 68.004514489 Da - related to 11B19F3.

 

Hazard warnings according to GHS

(General information without guarantee of accuracy and completeness! The information does not replace the chemical safety data sheet or a risk assessment, but rather provides a general overview of the risk posed by the hazardous substance.

Signal word: Danger

GHS hazard statements (H phrases):


H280
Contains gas under pressure: may explode if heated

H314
Causes severe skin burns and eye damage

H330
Fatal if inhaled

H373
May cause damage to organs through prolonged or repeated exposure

Labeling in the EU: See ECHA Substance Infocard 100.028.699.

For toxicology and occupational safety when handling Boron trifluoride as well as measures to be taken in case of danger, see: Hazardous Substances Information System GESTIS, ZVG-Nr. 004050.

International Chemical Safety Card ICSC (SDS, MSDS): See ICSC: 0231.

 

External Sources

PubChem:ID 6356ChemSpider:ID 6116UNII of the FDA (USA):Unique Ingredient Identifier 7JGD48PX8PEPA CompTox Chemicals Dashboard:DTXSID7041677Other CAS RN:109704-87-2; 155123-44-7; 372-85-0 (also used, outdated or deleted registration numbers)

 

Manufacturers and Sources of Supply

The table below lists producers and suppliers of Boron trifluoride as a commercial chemical for laboratories, research, industry and production with the corresponding contact details.

 

Literature Sources

[0] - Specialist and research articles in scientific journals via PubMed: Boron_trifluoride.

 

More Chemistry

isotopes

Social Media

Facebook

LinkedIn

Twitter

About ChemLin

home

about

contact, imprint

cookie and privacy policy

terms of use

Last update:

© 1996 - 2026 ChemLin