Aluminium oxide (data page)
# 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 |
| $C_1$ | $5.2799261^{−3}µm^2$ | $5.48041129^{−3}µm^2$ |
| $C_2$ | $1.42382647^{−2}µm^2$ | $1.47994281^{−2}µm^2$ |
| $C_3$ | $3.25017834^2µm^2$ | $4.0289514^2µm^2$ |

## 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, $Δ_fH^o_{solid}$ | -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, $Δ_fH^o_{liquid}$ | -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, $Δ_fH^o_{gas}$ | ? 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 | |
