AlF3

Formula : AlF3

High temperature: 
This mineral is not stable at room temperature, probably at temperatures up 100C.
Geological context: 
Occurs only as hydroxyled phase AlF3.2H2O (Rosenbergite) cavities in highly silicified limestone (Italy) and volcanic fumaroles (Antarctica).

Dernière mise à jour le 19.12.2017

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
cm3·mol-1
ΔGºf
kJ·mol-1
ΔHºf
kJ·mol-1
J·mol-1·k-1
CP
J·mol-1·K-1
83.977 27.090 -1.431.096 -1.510.400 66.500 75.12
Reaction properties

AlF3 ⇌ Al+3 + 3F-

298.15 K, 1 bar log10K: -17.32 ΔH°r: -34050 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K -16.90 -17.32 -18.10 -19.11 -20.52 -22.13 -24.03 -26.44