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 °C96.2 mPa.s at 50 °C Thermal conductivity 0.099 W/(m K) at 25 °C0.096 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 changeof fusion, ΔfusHo 7.60 kJ/mol Std entropy changeof fusion, ΔfusSo ? J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo 28.7 kJ/mol Std entropy changeof vaporization, ΔvapSo ? J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid −687.0 kJ/mol Std Gibbs free energyof 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 changeof formation, ΔfHogas −657. kJ/mol Std Gibbs free energyof 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

References

NIST Standard Reference Database David R. Lide, ed. Handbook of Chemistry and Physics, 85th Edition, Internet Version 2005. CRC Press, 2005.