- InChI
- InChI=1S/HI/h1H
- InChI Key
- XMBWDFGMSWQBCA-UHFFFAOYSA-N
- Formula
- HI
- SMILES
- I
- Molecular Weight1
- 127.91
- CAS
- 10034-85-2
- Other Names
-
- ANHYDROUS HYDRIODIC ACID
- HYDRIODIC ACID
- hydrogen iodide (HI)
- hydrogen monoiodide
- hydroiodic acid
- ω : Acentric Factor.
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- μ : Dipole Moment (debye).
- η : Dynamic viscosity (Pa×s).
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion at standard conditions (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- ΔvapH : Enthalpy of vaporization at a given temperature (kJ/mol).
- IE : Ionization energy (eV).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Pvap : Vapor pressure (kPa).
- ρl : Liquid Density (kg/m3).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ω | 0.0490 | KDB | |
| PAff | 627.50 | kJ/mol | NIST |
| BasG | 601.30 | kJ/mol | NIST |
| μ | 0.50 | debye | KDB |
| ΔfG° | 1.59 | kJ/mol | KDB |
| ΔfH°gas | [26.38; 26.50] | kJ/mol |
|
| ΔfH°gas | 26.38 | kJ/mol | KDB |
| ΔfH°gas | 26.50 ± 0.10 | kJ/mol | NIST |
| ΔfusH° | 1.84 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 24.82 | kJ/mol | Joback Calculated Property |
| IE | [10.30; 10.42] | eV |
|
| IE | 10.39 ± 0.00 | eV | NIST |
| IE | 10.38 | eV | NIST |
| IE | 10.39 ± 0.00 | eV | NIST |
| IE | 10.38 ± 0.01 | eV | NIST |
| IE | 10.42 ± 0.01 | eV | NIST |
| IE | 10.38 ± 0.02 | eV | NIST |
| IE | Outlier 10.30 ± 0.10 | eV | NIST |
| IE | 10.39 | eV | NIST |
| log10WS | -0.96 | Crippen Calculated Property | |
| logPoct/wat | 0.618 | Crippen Calculated Property | |
| McVol | 36.680 | ml/mol | McGowan Calculated Property |
| Pc | 8310.00 | kPa | KDB |
| Tboil | 237.60 | K | KDB |
| Tc | 424.00 | K | KDB |
| Tfus | [222.15; 222.38] | K |
|
| Tfus | 222.38 | K | KDB |
| Tfus | 222.15 ± 1.50 | K | NIST |
| Vc | 0.115 | m3/kmol | Joback Calculated Property |
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [17.59; 18.91] | J/mol×K | [291.84; 494.21] |
|
| Cp,gas | 17.59 | J/mol×K | 291.84 | Joback Calculated Property |
| Cp,gas | 18.32 | J/mol×K | 325.57 | Joback Calculated Property |
| Cp,gas | 18.75 | J/mol×K | 359.30 | Joback Calculated Property |
| Cp,gas | 18.91 | J/mol×K | 393.03 | Joback Calculated Property |
| Cp,gas | 18.84 | J/mol×K | 426.75 | Joback Calculated Property |
| Cp,gas | 18.57 | J/mol×K | 460.48 | Joback Calculated Property |
| Cp,gas | 18.12 | J/mol×K | 494.21 | Joback Calculated Property |
| η | [0.0003901; 0.0006857] | Pa×s | [164.19; 291.84] |
|
| η | 0.0006857 | Pa×s | 164.19 | Joback Calculated Property |
| η | 0.0005914 | Pa×s | 185.47 | Joback Calculated Property |
| η | 0.0005258 | Pa×s | 206.74 | Joback Calculated Property |
| η | 0.0004779 | Pa×s | 228.02 | Joback Calculated Property |
| η | 0.0004415 | Pa×s | 249.29 | Joback Calculated Property |
| η | 0.0004130 | Pa×s | 270.57 | Joback Calculated Property |
| η | 0.0003901 | Pa×s | 291.84 | Joback Calculated Property |
| ΔvapH | 19.80 | kJ/mol | 238.00 | NIST |
| ρl | 2799.99 | kg/m3 | 237.00 | KDB |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [49.31; 8245.03] | kPa | [222.38; 423.85] |
The Yaw...
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.40816e+01 | |||
| Coefficient B | -2.02965e+03 | |||
| Coefficient C | -2.30700e+01 | |||
| Temperature range, min. | 222.38 | |||
| Temperature range, max. | 423.85 | |||
| Pvap | 49.31 | kPa | 222.38 | Calculated Property |
| Pvap | 137.89 | kPa | 244.77 | Calculated Property |
| Pvap | 319.30 | kPa | 267.15 | Calculated Property |
| Pvap | 642.08 | kPa | 289.54 | Calculated Property |
| Pvap | 1158.65 | kPa | 311.92 | Calculated Property |
| Pvap | 1920.60 | kPa | 334.31 | Calculated Property |
| Pvap | 2974.87 | kPa | 356.69 | Calculated Property |
| Pvap | 4361.16 | kPa | 379.08 | Calculated Property |
| Pvap | 6110.53 | kPa | 401.46 | Calculated Property |
| Pvap | 8245.03 | kPa | 423.85 | Calculated Property |
Similar Compounds
Find more compounds similar to hydrogen iodide.
Mixtures
Sources
- Crippen Method
- Crippen Method
- Vapor-Liquid Equilibria for the HI + H2O System and the HI + H2O + I2 System
- Joback Method
- KDB
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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Outlier This icon means
that the value is more than 2 standard deviations away from the
property mean.