Hydrogen iodide (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, ΔfusHo		  ? kJ/mol
Std entropy change
of fusion, ΔfusSo		  ? J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 19.76 kJ/mol
Std entropy change
of vaporization, ΔvapSo		  ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		  ? 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		 26.5 kJ/mol
Standard molar entropy,
Sogas		 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−1
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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