- 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] |
|
|
T(K) Ideal gas heat capacity (J/mol×K) 17.6 17.8 18 18.2 18.4 18.6 18.8 19 300 350 400 450 | ||||
| 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] |
|
|
T(K) Dynamic viscosity (Pa×s) 4.00e-4 4.50e-4 5.00e-4 5.50e-4 6.00e-4 6.50e-4 7.00e-4 200 250 | ||||
| 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 | |||
|
T(K) Vapor pressure (kPa) 0 2000 4000 6000 8000 250 300 350 400 | ||||
| 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
Note: Cheméo is only indexing the data, follow the source links to retrieve the latest data. The source is also providing more information like the publication year, authors and more.
Take the time to validate and double check the source of the data.
Outlier This icon means
that the value is more than 2 standard deviations away from the
property mean.