Beryllium fluoride

Beryllium fluoride
Names
IUPAC name
Beryllium fluoride
Other names
Beryllium difluoride
Difluoroberyllane
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.198 Edit this at Wikidata
RTECS number
  • DS2800000
UNII
  • InChI=1S/Be.2FH/h;2*1H/q+2;;/p-2 checkY
    Key: JZKFIPKXQBZXMW-UHFFFAOYSA-L checkY
  • InChI=1/Be.2FH/h;2*1H/q+2;;/p-2
    Key: JZKFIPKXQBZXMW-NUQVWONBAD
  • solid ionic form: [Be+2].[F-].[F-]
  • solid covalent form: F[Be]F
  • gas form: [F+]=[Be-2]=[F+]
Properties
BeF2
Molar mass 47.01 g/mol
hygroscopic
Appearance colorless, glassy lumps
Density 1.986 g/cm3
Melting point 554 °C (1,029 °F; 827 K)[1]
Boiling point 1,169 °C (2,136 °F; 1,442 K)[2]
very soluble
Solubility sparingly soluble in alcohol
Structure
Trigonal, α-quartz
P3121 (No. 152), Pearson symbol hP9[3]
a = 473.29 pm, c = 517.88 pm
Linear
Thermochemistry
1.102 J/K or 59 J/mol K
45 J/mol K
-1028.2 kJ/g or -1010 kJ/mol
-941 kJ/mol
Hazards[6]
GHS labelling:
CorrosiveAcute ToxicityReproductive toxicity, target organ toxicity, carcinogen, aspiration hazardEnvironment, aquatic toxicity
Danger
H301, H305, H311, H314, H315, H319, H330, H335, H372, H411
P201, P202, P260, P264, P270, P271, P273, P280, P281, P284, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P312, P314, P320, P321, P322, P330, P361, P363, P391, P403+P233, P405, P501
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
90 mg/kg (oral, rat)
100 mg/kg (oral, mouse)[5]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[4]
REL (Recommended)
 Ca C 0.0005 mg/m3 (as Be)[4]
IDLH (Immediate danger)
 Ca [4 mg/m3 (as Be)][4]
Safety data sheet (SDS) InChem MSDS
Related compounds
Other anions
 Beryllium chloride
Beryllium bromide
Beryllium iodide
Other cations
 Magnesium fluoride
Calcium fluoride
Strontium fluoride
Barium fluoride
Radium fluoride
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Beryllium fluoride is the inorganic compound with the formula BeF2. This white solid is the principal precursor for the manufacture of beryllium metal. Its structure resembles that of quartz, but BeF2 is highly soluble in water.

  1. ^ "Beryllium Fluoride". American Elements. Retrieved 10 July 2023.
  2. ^ Lide, David R., ed. (2006). CRC Handbook of Chemistry and Physics (87th ed.). Boca Raton, FL: CRC Press. ISBN 0-8493-0487-3.
  3. ^ Wright, Albert F.; Fitch, Andrew N.; Wright, Adrian C. (1988). "The preparation and structure of the α- and β-quartz polymorphs of beryllium fluoride". Journal of Solid State Chemistry. 73 (2): 298. Bibcode:1988JSSCh..73..298W. doi:10.1016/0022-4596(88)90113-2.
  4. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH).
  5. ^ "Beryllium compounds (as Be)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  6. ^ "Beryllium Difluoride". PubChem. National Institute of Health. Retrieved October 13, 2017.