Silicon tetrachloride (data page)
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This page provides supplementary chemical data on silicon tetrachloride.
Material Safety Data Sheet
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".
Structure and properties
| Structure and properties | |
|---|---|
| Index of refraction, nD | 1.41156 at 25 °C |
| Abbe number | ? |
| 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 |
Thermodynamic properties
| 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, ΔfusHo | 7.60 kJ/mol |
| Std entropy change of fusion, ΔfusSo | ? J/(mol·K) |
| Std enthalpy change of vaporization, ΔvapHo | 28.7 kJ/mol |
| Std entropy change of vaporization, ΔvapSo | ? J/(mol·K) |
| Solid properties | |
| Std enthalpy change of formation, ΔfHosolid | ? kJ/mol |
| Standard molar entropy, Sosolid | ? J/(mol K) |
| Heat capacity, cp | ? J/(mol K) |
| Liquid properties | |
| Std enthalpy change of formation, ΔfHoliquid | −687.0 kJ/mol |
| Std Gibbs free energy of formation, ΔfGoliquid | −619.8 kJ/mol |
| Standard molar entropy, Soliquid | 239.7 J/(mol K) |
| Heat capacity, cp | 145. J/(mol K) |
| Gas properties | |
| Std enthalpy change of formation, ΔfHogas | −657. kJ/mol |
| Std Gibbs free energy of formation, ΔfGogas | −617.0 kJ/mol |
| Standard molar entropy, Sogas | 330.7 J/(mol K) |
| Heat capacity, cp | 90. J/(mol K) |
Spectral data
| UV-Vis | |
|---|---|
| λmax | ? nm |
| Extinction coefficient, ε | ? |
| IR | |
| Major absorption bands | 610, 642 cm−1 |
| NMR | |
| Proton NMR | |
| Carbon-13 NMR | |
| Other NMR data | |
| MS | |
| Masses of main fragments | 133, 135, 170 |
- Except where noted otherwise, data relate to Standard temperature and pressure.
- Reliability of data general note.
- David R. Lide, ed. Handbook of Chemistry and Physics, 85th Edition, Internet Version 2005. CRC Press, 2005.