# 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, ε$_{11}$=ε$_{22}$ | 9.34 ε$_0$ at 25 °C |
| Dielectric constant, ε$_{33}$ | 11.54 ε$_0$ at 25 °C |
| Bond strength | ? |
| Bond length | ? |
| Bond angle | ? |
| Magnetic susceptibility | ? |
Table of Refractive index :
| Wavelength(μm) | n$_o$ | n$_e$ |
| 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 |
| B$_1$ | 1.43134930 | 1.5039759 |
| B$_2$ | 6.5054713x10$^{−1}$ | 5.5069141x10$^{−1}$ |
| B$_3$ | 5.3414021 | 6.5937379 |
| C$_1$ | 5.2799261$^{−3}$μm$^2$ | 5.48041129$^{−3}$μm$^2$ |
| C$_2$ | 1.42382647$^{−2}$μm$^2$ | 1.47994281$^{−2}$μm$^2$ |
| C$_3$ | 3.25017834$^2$μm$^2$ | 4.0289514$^2$μm$^2$ |

## Thermodynamic properties

Phase behavior :
| Triple point | ? K (? °C), ? Pa |
| Critical point | ? K (? °C), ? Pa |
| Std enthalpy change of fusion, Δ$_{fus}$H$^o$ | ? kJ/mol |
| Std entropy change of fusion, Δ$_{fus}$S$^o$ | ? J/(mol·K) |
| Std enthalpy change of vaporization, Δ$_{vap}$H$^o$ | ? kJ/mol |
| Std entropy change of vaporization, Δ$_{vap}$S$^o$ | ? J/(mol·K) |
| Solid properties ||
| Std enthalpy change of formation, Δ$_f$H$^o$$_{solid}$ | -1675.7 kJ/mol |
| Standard molar entropy, S$^o$$_{solid}$ | 50.92 J/(mol K) |
| Heat capacity, c$_p$ | 89.7248 J/(mol K) |
| Liquid properties ||
| Std enthalpy change of formation, Δ$_f$H$^o$$_{liquid}$ | -1620.57 kJ/mol |
| Standard molar entropy, S$^o$$_{liquid}$ | 67.24 J/(mol K) |
| Heat capacity, c$_p$ | 192.5 J/(mol K) |
| Gas properties ||
| Std enthalpy change of formation, Δ$_f$H$^o$$_{gas}$ | ? kJ/mol |
| Standard molar entropy, S$^o$$_{gas}$ | ? J/(mol K) |
| Heat capacity, c$_p$ | ? J/(mol K) |

## Spectral data

UV-Vis :
| λ$_{max}$ | ? nm |
| Extinction coefficient, ε | ? |
| IR ||
| Major absorption bands | ? cm$^{−1}$ |
| NMR ||
| Proton NMR | |
| Carbon-13 NMR | |
| Other NMR data | |
| MS ||
| Masses of main fragments | |