Aluminium oxide (data page)

This page provides supplementary chemical data on aluminium oxide.

Material Safety Data Sheet

• SIRI
• Science Stuff

Structure and properties

Structure and properties
Dielectric constant, ε11=ε22	9.34 ε0 at 25 °C
Dielectric constant, ε33	11.54 ε0 at 25 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?

Table of Refractive index
Wavelength(μm)	no	ne
0.193	1.92879	1.91743
0.213	1.88903	1.87839
0.222	1.8754	1.86504
0.226	1.87017	1.85991
0.244	1.85059	1.84075
0.248	1.84696	1.83719
0.257	1.83932	1.82972
0.266	1.83304	1.82358
0.280	1.82437	1.81509
0.308	1.81096	1.80198
0.325	1.80467	1.79582
0.337	1.80082	1.79206
0.351	1.79693	1.78825
0.355	1.79598	1.78732
0.442	1.78038	1.77206
0.458	1.77843	1.77015
0.488	1.7753	1.76711
0.515	1.77304	1.76486
0.532	1.7717	1.76355
0.590	1.76804	1.75996
0.633	1.7659	1.75787
0.670	1.76433	1.75632
0.694	1.76341	1.75542
0.755	1.76141	1.75346
0.780	1.76068	1.75274
0.800	1.76013	1.7522
0.820	1.75961	1.75168
0.980	1.75607	1.74819
1.064	1.75449	1.74663
1.320	1.75009	1.74227
1.550	1.74618	1.73838
2.010	1.73748	1.72973
2.24929	1.73232	1.72432
2.703	1.719	1.711
2.941	1.712	1.704
3.333	1.701	1.693
3.704	1.687	1.679
4.000	1.674	1.666
4.348	1.658	1.65
4.762	1.636	1.628
5.000	1.623	1.615
5.263	1.607	1.599

Table of Coefficients of Sellmeier equation
Coefficient	for ordinary wave	for extraordinary wave
B1	1.43134930	1.5039759
B2	6.5054713x10−1	5.5069141x10−1
B3	5.3414021	6.5937379
C1	5.2799261−3μm2	5.48041129−3μm2
C2	1.42382647−2μm2	1.47994281−2μm2
C3	3.250178342μm2	4.02895142μm2

Thermodynamic properties

Phase behavior
Triple point	? K (? °C), ? Pa
Critical point	? K (? °C), ? Pa
Std enthalpy change of fusion, ΔfusHo	? kJ/mol
Std entropy change of fusion, ΔfusSo	? J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo	? kJ/mol
Std entropy change of vaporization, ΔvapSo	? J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid	-1675.7 kJ/mol
Standard molar entropy, Sosolid	50.92 J/(mol K)
Heat capacity, cp	89.7248 J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid	-1620.57 kJ/mol
Standard molar entropy, Soliquid	67.24 J/(mol K)
Heat capacity, cp	192.5 J/(mol K)
Gas properties
Std enthalpy change of formation, ΔfHogas	? kJ/mol
Standard molar entropy, Sogas	? J/(mol K)
Heat capacity, cp	? J/(mol K)

Spectral data

UV-Vis
λmax	? nm
Extinction coefficient, ε	?
IR
Major absorption bands	? cm−1
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

References

  This box:   

• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.