- InChI
- InChI=1S/C2N2/c3-1-2-4
- InChI Key
- JMANVNJQNLATNU-UHFFFAOYSA-N
- Formula
- C2N2
- SMILES
- N#CC#N
- Molecular Weight1
- 52.03
- CAS
- 460-19-5
- Other Names
-
- (CN)2
- CARBON NITRILE
- Carbon nitride
- Carbon nitride (C2N2)
- Cyanogen (C2N2)
- Cyanogen gas
- Cyanogene
- Dicyan
- Dicyanogen
- Ethanedinitrile
- NCCN
- Nitriloacetonitrile
- Oxalic acid dinitrile
- Oxalic nitrile
- Oxalonitrile
- Oxalyl cyanide
- Prussite
- Rcra waste number P031
- UN 1026
- ω : Acentric Factor.
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- ΔcH°gas : Standard gas enthalpy of combustion (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- Cp,liquid : Liquid phase heat capacity (J/mol×K).
- μ : Dipole Moment (debye).
- 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).
- ΔfusH : Enthalpy of fusion at a given temperature (kJ/mol).
- ΔsubH : Enthalpy of sublimation at a given temperature (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).
- logPoct/wat : Octanol/Water partition coefficient.
- McVol : McGowan's characteristic volume (ml/mol).
- Pc : Critical Pressure (kPa).
- Ptriple : Triple Point Pressure (kPa).
- Pvap : Vapor pressure (kPa).
- ρl : Liquid Density (kg/m3).
- Inp : Non-polar retention indices.
- ΔfusS : Entropy of fusion at a given temperature (J/mol×K).
- S°liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
- γ : Surface Tension (N/m).
- ΔvapS : Entropy of vaporization at a given temperature (J/mol×K).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Ttriple : Triple Point Temperature (K).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ω | 0.2780 | KDB | |
| PAff | 674.70 | kJ/mol | NIST |
| BasG | [621.70; 645.80] | kJ/mol |
|
| BasG | 645.80 | kJ/mol | NIST |
| BasG | 622.80 | kJ/mol | NIST |
| BasG | 621.70 | kJ/mol | NIST |
| BasG | 642.00 | kJ/mol | NIST |
| ΔcH°gas | [-1096.00; -1051.90] | kJ/mol |
|
| ΔcH°gas | -1096.00 ± 1.80 | kJ/mol | NIST |
| ΔcH°gas | -1051.90 ± 5.00 | kJ/mol | NIST |
| ΔcH°gas | -1093.70 ± 0.84 | kJ/mol | NIST |
| μ | 0.20 | debye | KDB |
| ΔfG° | 297.40 | kJ/mol | KDB |
| ΔfH°gas | [263.00; 309.20] | kJ/mol |
|
| ΔfH°gas | 309.20 | kJ/mol | KDB |
| ΔfH°gas | 308.90 ± 1.80 | kJ/mol | NIST |
| ΔfH°gas | 263.00 | kJ/mol | NIST |
| ΔfH°gas | 306.70 ± 0.84 | kJ/mol | NIST |
| ΔfusH° | 3.95 | kJ/mol | Joback Calculated Property |
| ΔvapH° | 20.80 | kJ/mol | NIST |
| IE | [13.36; 13.51] | eV |
|
| IE | 13.37 ± 0.01 | eV | NIST |
| IE | 13.50 ± 0.30 | eV | NIST |
| IE | 13.36 ± 0.01 | eV | NIST |
| IE | 13.37 ± 0.01 | eV | NIST |
| IE | 13.50 | eV | NIST |
| IE | 13.51 | eV | NIST |
| logPoct/wat | 0.034 | Crippen Calculated Property | |
| McVol | 41.800 | ml/mol | McGowan Calculated Property |
| Pc | 5980.00 | kPa | KDB |
| Ptriple | 75.10 ± 1.33 | kPa | NIST |
| Inp | [259.20; 273.00] |
|
|
| Inp | 259.20 | NIST | |
| Inp | 273.00 | NIST | |
| Inp | 259.20 | NIST | |
| S°liquid | 138.83 | J/mol×K | NIST |
| Tboil | [252.00; 252.00] | K |
|
| Tboil | 252.00 | K | KDB |
| Tboil | 252.00 | K | NIST |
| Tboil | 252.00 | K | NIST |
| Tc | 400.00 | K | KDB |
| Tfus | 245.20 | K | KDB |
| Ttriple | [245.32; 245.32] | K |
|
| Ttriple | 245.32 ± 0.02 | K | NIST |
| Ttriple | 245.32 ± 0.02 | K | NIST |
Cheméo can also estimate Critical Volume, 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 |
|---|---|---|---|---|
| Cp,gas | [58.92; 67.26] | J/mol×K | [449.52; 671.04] |
|
| Cp,gas | 58.92 | J/mol×K | 449.52 | Joback Calculated Property |
| Cp,gas | 60.47 | J/mol×K | 486.44 | Joback Calculated Property |
| Cp,gas | 61.95 | J/mol×K | 523.36 | Joback Calculated Property |
| Cp,gas | 63.37 | J/mol×K | 560.28 | Joback Calculated Property |
| Cp,gas | 64.73 | J/mol×K | 597.20 | Joback Calculated Property |
| Cp,gas | 66.02 | J/mol×K | 634.12 | Joback Calculated Property |
| Cp,gas | 67.26 | J/mol×K | 671.04 | Joback Calculated Property |
| Cp,liquid | 105.73 | J/mol×K | 255.00 | NIST |
| ΔfusH | [8.11; 8.11] | kJ/mol | [245.30; 245.32] |
|
| ΔfusH | 8.11 | kJ/mol | 245.30 | NIST |
| ΔfusH | 8.11 | kJ/mol | 245.32 | NIST |
| ΔfusH | 8.11 | kJ/mol | 245.32 | NIST |
| ΔsubH | [32.40; 34.40] | kJ/mol | [203.50; 223.50] |
|
| ΔsubH | 33.60 | kJ/mol | 203.50 | NIST |
| ΔsubH | 32.40 | kJ/mol | 219.00 | NIST |
| ΔsubH | 33.00 | kJ/mol | 220.50 | NIST |
| ΔsubH | 34.40 | kJ/mol | 223.50 | NIST |
| ΔsubH | 34.40 | kJ/mol | 223.50 | NIST |
| ΔvapH | [23.30; 24.50] | kJ/mol | [246.50; 259.50] |
|
| ΔvapH | 24.50 | kJ/mol | 246.50 | NIST |
| ΔvapH | 23.30 ± 0.20 | kJ/mol | 251.95 | NIST |
| ΔvapH | 23.33 | kJ/mol | 252.00 | NIST |
| ΔvapH | 23.33 | kJ/mol | 252.00 | NIST |
| ΔvapH | 23.33 | kJ/mol | 252.00 | NIST |
| ΔvapH | 23.90 | kJ/mol | 259.50 | NIST |
| ΔvapH | 23.50 | kJ/mol | 259.50 | NIST |
| ρl | 954.00 | kg/m3 | 252.00 | KDB |
| ΔfusS | [33.05; 33.05] | J/mol×K | [245.32; 245.32] |
|
| ΔfusS | 33.05 | J/mol×K | 245.32 | NIST |
| ΔfusS | 33.05 | J/mol×K | 245.32 | NIST |
| γ | 0.02 | N/m | 217.00 | KDB |
| ΔvapS | [92.58; 92.58] | J/mol×K | [252.00; 252.00] |
|
| ΔvapS | 92.58 | J/mol×K | 252.00 | NIST |
| ΔvapS | 92.58 | J/mol×K | 252.00 | NIST |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [1.33; 5979.48] | kPa | [191.32; 400.15] |
The Yaws Handbook of Vapor Pressure
|
| Equation | ln(Pvp) = A + B/(T + C) | |||
| Coefficient A | 1.39745e+01 | |||
| Coefficient B | -1.79426e+03 | |||
| Coefficient C | -6.02280e+01 | |||
| Temperature range, min. | 191.32 | |||
| Temperature range, max. | 400.15 | |||
| Pvap | 1.33 | kPa | 191.32 | Calculated Property |
| Pvap | 10.44 | kPa | 214.52 | Calculated Property |
| Pvap | 47.75 | kPa | 237.73 | Calculated Property |
| Pvap | 153.64 | kPa | 260.93 | Calculated Property |
| Pvap | 388.02 | kPa | 284.13 | Calculated Property |
| Pvap | 823.46 | kPa | 307.34 | Calculated Property |
| Pvap | 1535.79 | kPa | 330.54 | Calculated Property |
| Pvap | 2595.50 | kPa | 353.74 | Calculated Property |
| Pvap | 4061.80 | kPa | 376.95 | Calculated Property |
| Pvap | 5979.48 | kPa | 400.15 | Calculated Property |
Similar Compounds
Find more compounds similar to Cyanogen.
Sources
- Crippen Method
- Crippen Method
- Joback Method
- KDB
- McGowan Method
- NIST Webbook
- The Yaws Handbook of Vapor Pressure
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