Carbon monoxide (data page)

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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 == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

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! | Structure and properties

|-

| Index of refraction, n_D

| 1.0003364

|-

| Abbe number

| ? <!-- Please omit if not applicable -->

|-

| Dielectric constant, ε_r

| ? ε₀ at ? °C <!-- Please omit if not applicable -->

|-

| Bond strength

| 1850 N/m <!-- Specify which bond. Please omit if not applicable -->

|-

| Bond length

| 0.111&nbsp;nm <!-- Specify which bond. Please omit if not applicable -->

|-

| Bond energy

| 1079 kJ/mol <!-- Specify which bond. Please omit if not applicable -->

|-

| Bond angle

| Linear <!-- Specify which angle, e.g. Cl-P-O. Please omit if not applicable -->

|-

| Magnetic susceptibility

| ? <!-- Please omit if not applicable -->

|}

== Thermodynamic properties == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

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! | Phase behavior

|-

| Triple point

| 67.9 K (−205.1&nbsp;°C), 15.35 kPa

|-

| Critical point

| 132.7 K (−140.3&nbsp;°C), 3498 kPa, 11.1&nbsp;mol/L (3.1×10² kg/m³)

|-

| Std enthalpy change<br/>of fusion, Δ_fusH^<s>o</s>

| ? kJ/mol

|-

| Std entropy change<br/>of fusion, Δ_fusS^<s>o</s>

| ? J/(mol K)

|-

| Std enthalpy change<br/>of vaporization, Δ_vapH^<s>o</s>

| ? kJ/mol

|-

| Std entropy change<br/>of vaporization, Δ_vapS^<s>o</s>

| ? J/(mol K)

|-

| Std enthalpy change<br/>of sublimation, Δ_subH^<s>o</s>

| 8 kJ/mol (at 51–68 K)

|-

| Std entropy change<br/>of sublimation, Δ_subS^<s>o</s>

| ? J/(mol·K)

|-

! | Solid properties

|-

| Std enthalpy change<br/>of formation, Δ_fH^<s>o</s>_solid

| −110.5 kJ/mol

|-

| Standard molar entropy,<br/>S^<s>o</s>_solid

| ? J/(mol K)

|-

| Heat capacity, c_p

| ? J/(mol K)

|-

! | Liquid properties

|-

| Std enthalpy change<br/>of formation, Δ_fH^<s>o</s>_liquid

| ? kJ/mol

|-

| Standard molar entropy,<br/>S^<s>o</s>_liquid

| ? J/(mol K)

|-

| Heat capacity, c_p

| ? J/(mol K)

|-

! | Gas properties

|-

| Std enthalpy change<br/>of formation, Δ_fH^<s>o</s>_gas

| −110.53 kJ/mol

|-

| Std enthalpy change<br/>of combustion, Δ_cH^<s>o</s>_gas

| −283.0 kJ/mol

|-

| Standard molar entropy,<br/>S^<s>o</s>_gas

| 197.66 J/(mol K)

|-

| Heat capacity, c_p

| 29 J/(mol K)

|-

|}

== Spectral data == <!-- KEEP this header, it is linked to from the infobox on the main article page -->

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! | UV-Vis

|-

| λ_max

| 55 nm

|-

| Extinction coefficient, ε

| ?

|-

! | IR

|-

| Major absorption bands

| 2143&nbsp;cm^&minus;1

|-

| ¹³CO

| 2099.2 ± 4&nbsp;cm^&minus;1

|-

! | NMR

|-

| Proton NMR <!-- Link to image of spectrum -->

| &nbsp;

|-

| Carbon-13 NMR <!-- Link to image of spectrum -->

| &nbsp;

|-

| Other NMR data <!-- Insert special data e.g. ¹⁹F chem. shifts, omit if not used -->

| &nbsp;

|-

! | MS

|-

| Masses of <br>main fragments

| &nbsp; <!-- Give list of major fragments -->

|-

|}

References

<!-- NIST Standard Reference Database -->