Carbon monoxide (data page)

This page provides supplementary chemical data on carbon monoxide.

Material safety data sheet

The handling of this chemical may incur notable safety precautions. It is highly recommended that you seek the material safety data sheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions.

• MSDS from Advanced Gas Technologies in the SDSdata.org database

Structure and properties

Structure and properties
Index of refraction, nD	1.0003364
Abbe number	?
Dielectric constant, εr	? ε0 at ? °C
Bond strength	1850 N/m
Bond length	0.111 nm
Bond energy	1079 kJ/mol
Bond angle	Linear
Magnetic susceptibility	?

Thermodynamic properties

Phase behavior
Triple point	67.9 K (−205.1 °C), 15.35 kPa
Critical point	132.7 K (−140.3 °C), 3498 kPa, 11.1 mol/L (3.1×102 kg/m3)
Std enthalpy change of fusion, ΔfusHo	? kJ/mol
Std entropy change of fusion, ΔfusSo	? J/(mol K)
Std enthalpy change of vaporization, ΔvapHo	? kJ/mol
Std entropy change of vaporization, ΔvapSo	? J/(mol K)
Std enthalpy change of sublimation, ΔsubHo	8 kJ/mol (at 51–68 K)
Std entropy change of sublimation, ΔsubSo	? J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid	−110.5 kJ/mol
Standard molar entropy, Sosolid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid	? kJ/mol
Standard molar entropy, Soliquid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Gas properties
Std enthalpy change of formation, ΔfHogas	−110.53 kJ/mol
Std enthalpy change of combustion, ΔcHogas	−283.0 kJ/mol
Standard molar entropy, Sogas	197.66 J/(mol K)
Heat capacity, cp	29 J/(mol K)

Spectral data

UV-Vis
λmax	55 nm
Extinction coefficient, ε	?
IR
Major absorption bands	2143 cm−1
13CO	2099.2 ± 4 cm−1
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

References

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• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.