- InChI
- InChI=1S/Kr
- InChI Key
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N
- Formula
- Kr
- SMILES
- [Kr]
- Molecular Weight1
- 83.80
- CAS
- 7439-90-9
- Other Names
-
- Kr
- UN 1056
- UN 1970
- ω : Acentric Factor.
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- μ : Dipole Moment (debye).
- ΔvapH : Enthalpy of vaporization at a given temperature (kJ/mol).
- IE : Ionization energy (eV).
- Pc : Critical Pressure (kPa).
- Ptriple : Triple Point Pressure (kPa).
- Pvap : Vapor pressure (kPa).
- ρc : Critical density (kg/m3).
- ρl : Liquid Density (kg/m3).
- S°gas,1 bar : Molar entropy at standard conditions (1 bar) (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Ttriple : Triple Point Temperature (K).
- Vc : Critical Volume (m3/kmol).
- Zc : Critical Compressibility.
- Zra : Rackett Parameter.
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ω | 0.0050 | KDB | |
| PAff | 424.60 | kJ/mol | NIST |
| BasG | 402.40 | kJ/mol | NIST |
| μ | 0.00 | debye | KDB |
| IE | [13.97; 14.67] | eV |
|
| IE | 14.00 ± 0.00 | eV | NIST |
| IE | 14.00 | eV | NIST |
| IE | 13.99 | eV | NIST |
| IE | 14.00 | eV | NIST |
| IE | 14.00 | eV | NIST |
| IE | 14.00 ± 0.00 | eV | NIST |
| IE | Outlier 14.67 ± 0.00 | eV | NIST |
| IE | 14.00 ± 0.00 | eV | NIST |
| IE | 13.99 ± 0.00 | eV | NIST |
| IE | Outlier 14.66 ± 0.00 | eV | NIST |
| IE | 14.00 | eV | NIST |
| IE | 13.97 ± 0.00 | eV | NIST |
| IE | 14.00 ± 0.05 | eV | NIST |
| IE | 14.01 ± 0.01 | eV | NIST |
| IE | 14.00 ± 0.00 | eV | NIST |
| IE | 14.05 | eV | NIST |
| Pc | [5500.00; 5520.19] | kPa |
|
| Pc | 5500.00 | kPa | KDB |
| Pc | 5520.19 ± 5.51 | kPa | NIST |
| Ptriple | [72.92; 73.15] | kPa |
|
| Ptriple | 72.92 | kPa | KDB |
| Ptriple | 73.15 ± 0.06 | kPa | NIST |
| ρc | 921.78 ± 9.13 | kg/m3 | NIST |
| S°gas,1 bar | 164.09 ± 0.00 | J/mol×K | NIST |
| Tboil | [119.78; 119.93] | K |
|
| Tboil | 119.93 | K | KDB |
| Tboil | 119.78 ± 0.05 | K | NIST |
| Tc | [209.41; 209.46] | K |
|
| Tc | 209.41 | K | KDB |
| Tc | 209.46 ± 0.02 | K | NIST |
| Tfus | 115.79 | K | KDB |
| Ttriple | [115.76; 116.10] | K |
|
| Ttriple | 115.80 | K | KDB |
| Ttriple | 115.76 ± 0.08 | K | NIST |
| Ttriple | 116.10 ± 0.40 | K | NIST |
| Ttriple | 115.95 ± 0.20 | K | NIST |
| Vc | 0.091 | m3/kmol | KDB |
| Zc | 0.2874550 | KDB | |
| Zra | 0.29 | KDB |
Cheméo can also estimate Enthalpy of formation at standard conditions, Enthalpy of vaporization at standard conditions, Standard Gibbs free energy of formation, Log10 of Water solubility in mol/l for this compound, but they fall outside the models' validated range, so they are not shown here. Open the prediction tool to compute them on demand.
Temperature Dependent Properties
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| ΔvapH | 11.54 | kJ/mol | 40.50 | Measurements of enthalpy of sublimation of Ne, N2, O2, Ar, CO2, Kr, Xe, and H2O using a double paddle oscillator |
| ρl | 2420.00 | kg/m3 | 120.00 | KDB |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [73.62; 5504.84] | kPa | [115.78; 209.35] |
The Yaws Handbook of Vapor Pressure
|
| Equation | ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.41355e+01 | |||
| Coefficient B | -1.17804e+03 | |||
| Coefficient C | 3.98000e+00 | |||
| Temperature range, min. | 115.78 | |||
| Temperature range, max. | 209.35 | |||
| Pvap | 73.62 | kPa | 115.78 | Calculated Property |
| Pvap | 161.51 | kPa | 126.18 | Calculated Property |
| Pvap | 315.48 | kPa | 136.57 | Calculated Property |
| Pvap | 561.92 | kPa | 146.97 | Calculated Property |
| Pvap | 929.12 | kPa | 157.37 | Calculated Property |
| Pvap | 1445.52 | kPa | 167.76 | Calculated Property |
| Pvap | 2138.29 | kPa | 178.16 | Calculated Property |
| Pvap | 3032.10 | kPa | 188.56 | Calculated Property |
| Pvap | 4148.38 | kPa | 198.95 | Calculated Property |
| Pvap | 5504.84 | kPa | 209.35 | Calculated Property |
Mixtures
- 2-PROPANOL, 1,1,1,3,3,3-HEXAFLUORO- + Krypton + Water
- Furan, tetrahydro-2,5-dimethyl- + Krypton + Furan, tetrahydro-2,5-dimethyl-, cis-
- helium + Krypton
- 2,5,8,11-Tetraoxadodecane + Krypton
- 2,5,8,11,14-Pentaoxapentadecane + Krypton
- Carbonic acid, dimethyl ester + Krypton
- Diethyl carbonate + Krypton
Sources
- Binary Diffusion Coefficient Data of Various Gas Systems Determined Using a Loschmidt Cell and Holographic Interferometry
- Physical data for a process to separate krypton from air by selective absorption in an ionic liquid
- Solubility of gases in fluoroorganic alcohols. Part II. Solubilities of noble gases in (water + 1,1,1,3,3,3-hexafluoropropan-2-ol) at 298.15 K and 101.33 kPa
- Solubilities of some gases in four immidazolium-based ionic liquids
- Measurements of enthalpy of sublimation of Ne, N2, O2, Ar, CO2, Kr, Xe, and H2O using a double paddle oscillator
- Solubilities of gases in cycloethers. The solubility of 13 nonpolar gases in 2,5-dimethyltetrahydrofuran at 273.15 to 303.15 K and 101.32 kPa
- Solubilities of Nonpolar Gases in Triethylene Glycol Dimethyl Ether, Tetraethylene Glycol Dimethyl Ether, Dimethyl Carbonate, and Diethyl Carbonate at 298.15 K and 101.33 kPa Partial Pressure of Gas
- Solubilities of Nonpolar Gases in Dimethyl Carbonate and Diethyl Carbonate
- KDB
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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