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Hydrogen iodide (data page)

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Chemical data page

This page provides supplementary chemical data on hydrogen iodide.

Structure and properties

Structure and properties
Index of refraction 1.466
Dielectric constant 1.00214 ε0 at 20 °C
Bond strength 298.407 kJ/mol
Bond length 160.9 pm
Magnetic susceptibility ?

Thermodynamic properties

Phase behavior
Triple point ? K (? °C), ? Pa
Critical point 424 K (151 °C), 8310000 Pa
Std enthalpy change
of fusion, ΔfusH 		? kJ/mol
Std entropy change
of fusion, ΔfusS 		? J/(mol·K)
Std enthalpy change
of vaporization, ΔvapH 		19.76 kJ/mol
Std entropy change
of vaporization, ΔvapS 		? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHsolid 		? kJ/mol
Standard molar entropy,
Ssolid 		? J/(mol K)
Heat capacity, cp ? J/(mol K)
Liquid properties
Std enthalpy change
of formation, ΔfHliquid 		? kJ/mol
Standard molar entropy,
Sliquid 		? J/(mol K)
Heat capacity, cp ? J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHgas 		26.5 kJ/mol
Standard molar entropy,
Sgas 		206.6 J/(mol K)
Heat capacity, cp 29.2 J/(mol K)

Spectral data

UV-Vis
λmax ? nm
Extinction coefficient, ε ?
IR
Major absorption bands ? cm
NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
MS
Masses of
main fragments 		 

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 such as SIRI, and follow its directions.

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References

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