This page provides supplementary chemical data on silicon tetrachloride.
The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source, it this case, noting that one should "avoid all contact! In all cases consult a doctor! ... inhalation causes sore throat and Burning sensation".[1]
| Structure and properties | ||
| Index of refraction, nD | 1.41156 at 25 °C | |
| ? | ||
| Dielectric constant, εr | 2.248 ε0 at 0 °C | |
| Bond strength | 381 kJ/mol (Si-Cl) | |
| Bond length | ? | |
| Bond angle | 109° (Cl-Si-Cl) | |
| Dipole#Molecular dipoles | 0 D | |
| Magnetic susceptibility | −87.5 | |
| Viscosity | 99.4 mPa.s at 25 °C 96.2 mPa.s at 50 °C | |
| Thermal conductivity | 0.099 W/(m K) at 25 °C 0.096 W/(m K) at 50 °C |
| Phase behavior | |
| Triple point | ? K (? °C), ? Pa |
| Critical point | 508.1 K (235.0 °C), 3.593 MPa, 0.326vdm3/mol |
| Std enthalpy change of fusion, ΔfusH | 7.60 kJ/mol |
| Std entropy change of fusion, ΔfusS | ? J/(mol·K) |
| Std enthalpy change of vaporization, ΔvapH | 28.7 kJ/mol |
| Std entropy change of vaporization, ΔvapS | ? J/(mol·K) |
| Solid properties | |
| Std enthalpy change of formation, ΔfH | ? kJ/mol |
| Standard molar entropy, S | ? J/(mol K) |
| Heat capacity, cp | ? J/(mol K) |
| Liquid properties | |
| Std enthalpy change of formation, ΔfH | −687.0 kJ/mol |
| Std Gibbs free energy of formation, ΔfG | −619.8 kJ/mol |
| Standard molar entropy, S | 239.7 J/(mol K) |
| Heat capacity, cp | 145. J/(mol K) |
| Gas properties | |
| Std enthalpy change of formation, ΔfH | −657. kJ/mol |
| Std Gibbs free energy of formation, ΔfG | −617.0 kJ/mol |
| Standard molar entropy, S | 330.7 J/(mol K) |
| Heat capacity, cp | 90. J/(mol K) |
| UV-Vis | |
| λmax | ? nm |
| Extinction coefficient, ε | ? |
| IR | |
| Major absorption bands | 610, 642 cm-1 |
| NMR | |
| Other NMR data | |
| MS | |
| Masses of main fragments | 133, 135, 170 |