- InChI
- InChI=1S/C3O2/c4-2-1-3-5
- InChI Key
- GNEVIACKFGQMHB-UHFFFAOYSA-N
- Formula
- C3O2
- SMILES
- O=C=C=C=O
- Molecular Weight1
- 68.03
- CAS
- 504-64-3
- Other Names
-
- Carbon suboxide
- Carbon oxide (C3O2)
- C3O2
- ΔcH°liquid : Standard liquid enthalpy of combustion (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- EA : Electron affinity (eV).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔfH°liquid : Liquid phase enthalpy of formation at standard conditions (kJ/mol).
- ΔfusH° : Enthalpy of fusion 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).
- Pvap : Vapor pressure (kPa).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ΔcH°liquid | -1059.10 | kJ/mol | NIST |
| EA | 0.85 ± 0.15 | eV | NIST |
| ΔfH°gas | -97.80 ± 1.80 | kJ/mol | NIST |
| ΔfH°liquid | -121.50 ± 1.00 | kJ/mol | NIST |
| ΔfusH° | 20.53 | kJ/mol | Joback Calculated Property |
| IE | [10.60; 10.61] | eV |
|
| IE | 10.61 | eV | NIST |
| IE | 10.60 | eV | NIST |
| IE | 10.60 ± 0.03 | eV | NIST |
| IE | 10.60 | eV | NIST |
| logPoct/wat | -0.639 | Crippen Calculated Property | |
| McVol | 47.670 | ml/mol | McGowan Calculated Property |
Cheméo can also estimate Normal Boiling Point Temperature, Normal melting (fusion) point, Critical Temperature, Critical Pressure, Critical Volume, Enthalpy of vaporization at standard conditions, Standard Gibbs free energy of formation, Acentric Factor, 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 | 26.20 | kJ/mol | 205.00 | NIST |
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [66.97; 101.10] | J/mol×K | [298.00; 1200.00] |
NIST
|
| Equation | Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,gas in J/mol×K, T in K | |||
| Coefficient A | 5.18322e+01 | |||
| Coefficient B | 8.20792e+01 | |||
| Coefficient C | -4.49031e+01 | |||
| Coefficient D | 9.13078e+00 | |||
| Coefficient E | -4.94976e-01 | |||
| Reference | Chase, 1998 | |||
| Temperature range, min. | 298.00 | |||
| Temperature range, max. | 1200.00 | |||
| Cp,gas | 66.97 | J/mol×K | 298.00 | Calculated Property |
| Cp,gas | 74.85 | J/mol×K | 398.22 | Calculated Property |
| Cp,gas | 80.73 | J/mol×K | 498.44 | Calculated Property |
| Cp,gas | 85.46 | J/mol×K | 598.67 | Calculated Property |
| Cp,gas | 89.37 | J/mol×K | 698.89 | Calculated Property |
| Cp,gas | 92.63 | J/mol×K | 799.11 | Calculated Property |
| Cp,gas | 95.36 | J/mol×K | 899.33 | Calculated Property |
| Cp,gas | 97.63 | J/mol×K | 999.56 | Calculated Property |
| Cp,gas | 99.53 | J/mol×K | 1099.78 | Calculated Property |
| Cp,gas | 101.10 | J/mol×K | 1200.00 | Calculated Property |
| Cp,gas | [101.03; 111.71] | J/mol×K | [1200.00; 6000.00] |
NIST
|
| Equation | Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,gas in J/mol×K, T in K | |||
| Coefficient A | 1.06576e+02 | |||
| Coefficient B | 3.00843e+00 | |||
| Coefficient C | -5.85714e-01 | |||
| Coefficient D | 3.93830e-02 | |||
| Coefficient E | -1.20696e+01 | |||
| Reference | Chase, 1998 | |||
| Temperature range, min. | 1200.00 | |||
| Temperature range, max. | 6000.00 | |||
| Cp,gas | 101.03 | J/mol×K | 1200.00 | Calculated Property |
| Cp,gas | 106.22 | J/mol×K | 1733.33 | Calculated Property |
| Cp,gas | 108.50 | J/mol×K | 2266.67 | Calculated Property |
| Cp,gas | 109.73 | J/mol×K | 2800.00 | Calculated Property |
| Cp,gas | 110.47 | J/mol×K | 3333.33 | Calculated Property |
| Cp,gas | 110.92 | J/mol×K | 3866.67 | Calculated Property |
| Cp,gas | 111.21 | J/mol×K | 4400.00 | Calculated Property |
| Cp,gas | 111.40 | J/mol×K | 4933.33 | Calculated Property |
| Cp,gas | 111.55 | J/mol×K | 5466.67 | Calculated Property |
| Cp,gas | 111.71 | J/mol×K | 6000.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Pvap | [0.02; 26.21] | kPa | [160.96; 248.78] |
NIST
|
| Equation | ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.51586e+01 | |||
| Coefficient B | -2.78126e+03 | |||
| Coefficient C | -1.49110e+01 | |||
| Reference | McDougall and Kilpatrick, 1965, 2 | |||
| Temperature range, min. | 160.96 | |||
| Temperature range, max. | 248.78 | |||
| Pvap | 0.02 | kPa | 160.96 | Calculated Property |
| Pvap | 0.07 | kPa | 170.72 | Calculated Property |
| Pvap | 0.19 | kPa | 180.48 | Calculated Property |
| Pvap | 0.49 | kPa | 190.23 | Calculated Property |
| Pvap | 1.14 | kPa | 199.99 | Calculated Property |
| Pvap | 2.42 | kPa | 209.75 | Calculated Property |
| Pvap | 4.78 | kPa | 219.51 | Calculated Property |
| Pvap | 8.88 | kPa | 229.26 | Calculated Property |
| Pvap | 15.62 | kPa | 239.02 | Calculated Property |
| Pvap | 26.21 | kPa | 248.78 | Calculated Property |
| Pvap | [0.02; 26.21] | kPa | [160.96; 248.78] |
NIST
|
| Equation | ln(Y) = A + B/(T + C) Y is Pvap in kPa, T in K | |||
| Coefficient A | 1.51586e+01 | |||
| Coefficient B | -2.78126e+03 | |||
| Coefficient C | -1.49110e+01 | |||
| Reference | McDougall and Kilpatrick, 1965 | |||
| Temperature range, min. | 160.96 | |||
| Temperature range, max. | 248.78 | |||
| Pvap | 0.02 | kPa | 160.96 | Calculated Property |
| Pvap | 0.07 | kPa | 170.72 | Calculated Property |
| Pvap | 0.19 | kPa | 180.48 | Calculated Property |
| Pvap | 0.49 | kPa | 190.23 | Calculated Property |
| Pvap | 1.14 | kPa | 199.99 | Calculated Property |
| Pvap | 2.42 | kPa | 209.75 | Calculated Property |
| Pvap | 4.78 | kPa | 219.51 | Calculated Property |
| Pvap | 8.88 | kPa | 229.26 | Calculated Property |
| Pvap | 15.62 | kPa | 239.02 | Calculated Property |
| Pvap | 26.21 | kPa | 248.78 | Calculated Property |
Similar Compounds
Find more compounds similar to 1,2-Propadiene-1,3-dione.
Sources
- Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
- Crippen Method
- Crippen Method
- Joback Method
- McGowan Method
- NIST Webbook
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