Phosphoryl chloride (data page)

This page provides supplementary chemical data on phosphoryl chloride.

Material Safety Data Sheets

• Aldrich MSDS
• Fisher MSDS
• Baker MSDS

Thermodynamic properties

Phase behavior
Triple point	? K (? °C), ? Pa
Critical point	602 K (329 °C), ? Pa
Std enthalpy change of fusion, ΔfusHo	? kJ/mol
Std entropy change of fusion, ΔfusSo	? J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo	+33. kJ/mol
Std entropy change of vaporization, ΔvapSo	? J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid	−610.0 kJ/mol
Standard molar entropy, Sosolid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid	−597.0 kJ/mol
Standard molar entropy, Soliquid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Gas properties
Std enthalpy change of formation, ΔfHogas	−592.0 kJ/mol
Std Gibbs' free energy change of formation, ΔfGogas	−545.2 kJ/mol
Standard molar entropy, Sogas	325 J/(mol K)
Heat capacity, cp	? J/(mol K)

Spectral data

UV-Vis
Lambda-max	? nm
Extinction coefficient	?
IR
Major absorption bands	? cm−1
NMR
Phosphorus-31 NMR	2.2 ppm upfield of H3PO4
MS
Masses of main fragments

Structure and properties data

Structure and properties
Index of refraction	1.460
Dielectric constant	13 C2/(N·m2) at 22 °C
Bond strength	533.5 kJ/mol (P=O)
Bond length	158 pm (P=O) 202 pm (P-Cl)
Bond angle	103° (Cl-P-Cl)

References

Except where noted otherwise, data relate to standard ambient temperature and pressure.

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