Crystal structure
Names
Other names
Aluminium(III) fluoride
Aluminum trifluoride
Identifiers
CAS Number: 7784-18-1
JSmol: Interactive image
ChEBI: CHEBI:49464
ChemSpider: 2039
ECHA InfoCard: 100.029.137
PubChem: 2124
RTECS number: BD0725000
Properties
Chemical formula: AlF
Molar mass: 83.977 g/mol (anhydrous)
101.992 g/mol (monohydrate)
138.023 (trihydrate)
Appearance: white, crystalline solid
odorless
Density: 3.10 g/cm (anhydrous)
2.17 g/cm (monohydrate)
1.914 g/cm (trihydrate)333
Melting point: 1,290 °C (2,350 °F; 1,560 K) (anhydrous) (sublimes)
Solubility in water: 5.6 g/L (0 °C)
6.7 g/L (20 °C)
17.2 g/L (100 °C)
Magnetic susceptibility: -13.4·10 cm/mol−63
Refractive index: 1.3767 (visible range)
Structure
Crystal structure: Rhombohedral
Space group: Rc, No. 1673
Lattice constant: = 0.49254 nm, = 1.24477 nm
Lattice volume: 0.261519
Formula units: 6
Thermochemistry
Specific
heat capacity: 75.1 J/mol·K
Std molar
entropy: 66.5 J/mol·K
Std enthalpy of
formation: −1510.4 kJ/mol
Gibbs free energy: -1431.1 kJ/mol
Hazards
Safety data sheet: InChem MSDS
GHS pictograms:
GHS signal word: DANGER
GHS hazard statements: H301 H302 H314 H315 H319 H335 H361 H372
GHS precautionary statements: P260 P261 P264 P270 P271 P280 P301+310 P301+312 P301+330+331 P302+352 P303+361+353 P304+340 P305+351+338 P310 P312 P321 P330 P332+313 P337+313 P362 P363 P403+233 P405 P501
NFPA 704:
NIOSH
PEL: none
REL: 2 mg/m
IDLH: N.D.
Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).Except where otherwise noted, data are given for materials in their(at 25 °C [77 °F], 100 kPa).