- InChI
- InChI=1S/Ca.O
- InChI Key
- ODINCKMPIJJUCX-UHFFFAOYSA-N
- Formula
- CaO
- SMILES
- [O]=[Ca]
- Molecular Weight1
- 56.08
- CAS
- 1305-78-8
- Other Names
-
- calcia
- calcium monoxide
- caloxol CP 2
- caloxol W 3
- calx
- calxyl
- desical P
- rhenosorb C
- rhenosorb F
- PAff : Proton affinity (kJ/mol).
- BasG : Gas basicity (kJ/mol).
- Cp,gas : Ideal gas heat capacity (J/mol×K).
- Cp,liquid : Liquid phase heat capacity (J/mol×K).
- Cp,solid : Solid phase heat capacity (J/mol×K).
- ΔfH°solid : Solid phase enthalpy of formation at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- S°solid,1 bar : Solid phase molar entropy at standard conditions (J/mol×K).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| PAff | 1190.60 | kJ/mol | NIST |
| BasG | 1162.30 | kJ/mol | NIST |
| ΔfH°solid | -634.92 ± 0.90 | kJ/mol | NIST |
| IE | [6.50; 7.00] | eV |
|
| IE | 6.66 ± 0.18 | eV | NIST |
| IE | 6.66 ± 0.18 | eV | NIST |
| IE | 6.50 ± 0.30 | eV | NIST |
| IE | 7.00 ± 1.00 | eV | NIST |
| IE | 6.90 ± 0.15 | eV | NIST |
| IE | 7.00 ± 1.00 | eV | NIST |
| IE | 6.50 | eV | NIST |
| S°solid,1 bar | 38.10 ± 0.40 | J/mol×K | NIST |
Cheméo can also estimate Normal Boiling Point Temperature, Normal melting (fusion) point, Critical Temperature, Critical Pressure, Critical Volume, Enthalpy of formation at standard conditions, 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.
Correlations
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,gas | [58.63; 53.70] | J/mol×K | [4500.00; 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 | 3.58051e+02 | |||
| Coefficient B | -1.17989e+02 | |||
| Coefficient C | 1.66794e+01 | |||
| Coefficient D | -8.32390e-01 | |||
| Coefficient E | -6.15094e+02 | |||
| Reference | Chase, 1998 | |||
| Comment | F=-713.7737, G=172.4967, H=43.93200; Data last reviewed in June, 1973 | |||
| Temperature range, min. | 4500.00 | |||
| Temperature range, max. | 6000.00 | |||
| Cp,gas | 58.63 | J/mol×K | 4500.00 | Calculated Property |
| Cp,gas | 57.84 | J/mol×K | 4666.67 | Calculated Property |
| Cp,gas | 57.10 | J/mol×K | 4833.33 | Calculated Property |
| Cp,gas | 56.44 | J/mol×K | 5000.00 | Calculated Property |
| Cp,gas | 55.84 | J/mol×K | 5166.67 | Calculated Property |
| Cp,gas | 55.31 | J/mol×K | 5333.33 | Calculated Property |
| Cp,gas | 54.84 | J/mol×K | 5500.00 | Calculated Property |
| Cp,gas | 54.42 | J/mol×K | 5666.67 | Calculated Property |
| Cp,gas | 54.04 | J/mol×K | 5833.33 | Calculated Property |
| Cp,gas | 53.70 | J/mol×K | 6000.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,liquid | [62.76; 62.76] | J/mol×K | [3200.00; 4500.00] |
NIST
|
| Equation | Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,liquid in J/mol×K, T in K | |||
| Coefficient A | 6.27600e+01 | |||
| Coefficient B | 4.62968e-07 | |||
| Coefficient C | -1.09204e-07 | |||
| Coefficient D | 8.96631e-09 | |||
| Coefficient E | 6.50466e-07 | |||
| Reference | Chase, 1998 | |||
| Comment | F=-591.8059, G=116.8909, H=-557.3339; Data last reviewed in June, 1973 | |||
| Temperature range, min. | 3200.00 | |||
| Temperature range, max. | 4500.00 | |||
| Cp,liquid | 62.76 | J/mol×K | 3200.00 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 3344.44 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 3488.89 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 3633.33 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 3777.78 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 3922.22 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 4066.67 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 4211.11 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 4355.56 | Calculated Property |
| Cp,liquid | 62.76 | J/mol×K | 4500.00 | Calculated Property |
| Property | Value | Unit | Temperature (K) | Source |
|---|---|---|---|---|
| Cp,solid | [42.09; 63.42] | J/mol×K | [298.00; 3200.00] |
NIST
|
| Equation | Y = A + B·t + C·t² + D·t³ + E/t², t = T/1000 Y is Cp,solid in J/mol×K, T in K | |||
| Coefficient A | 4.99540e+01 | |||
| Coefficient B | 4.88792e+00 | |||
| Coefficient C | -3.52056e-01 | |||
| Coefficient D | 4.61870e-02 | |||
| Coefficient E | -8.25097e-01 | |||
| Reference | Chase, 1998 | |||
| Comment | F=-652.9718, G=92.56096, H=-635.0894; Data last reviewed in June, 1973 | |||
| Temperature range, min. | 298.00 | |||
| Temperature range, max. | 3200.00 | |||
| Cp,solid | 42.09 | J/mol×K | 298.00 | Calculated Property |
| Cp,solid | 50.72 | J/mol×K | 620.44 | Calculated Property |
| Cp,solid | 53.36 | J/mol×K | 942.89 | Calculated Property |
| Cp,solid | 55.15 | J/mol×K | 1265.33 | Calculated Property |
| Cp,solid | 56.69 | J/mol×K | 1587.78 | Calculated Property |
| Cp,solid | 58.10 | J/mol×K | 1910.22 | Calculated Property |
| Cp,solid | 59.46 | J/mol×K | 2232.67 | Calculated Property |
| Cp,solid | 60.79 | J/mol×K | 2555.11 | Calculated Property |
| Cp,solid | 62.10 | J/mol×K | 2877.56 | Calculated Property |
| Cp,solid | 63.42 | J/mol×K | 3200.00 | Calculated Property |
Similar Compounds
Find more compounds similar to calcium oxide.
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.
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- Gibbs energy of formation of Ca7V4O17
- Experimental determination of the liquidus of the binary system (Cu2O + CaO) in air at temperature from (1050 to 1500) degC
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- Standard enthalpies of formation of Sr2CuO3 and Ca2CuO3
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- Hydrothermal synthesis, characterization and thermochemistry of Ca2[B2O4(OH)2]*0.5H2O
- Thermodynamics of BaNd2Fe2O7(s) and BaNdFeO4(s) in the system Ba Nd Fe O
- Thermochemistry of dicesium calcium tetraborate octahydrate
- Determination of Standard Enthalpy of Vaporization and Thermal Decomposition Reactions from Derivative Thermogravimetric (DTG) Curves
- Thermodynamic stability of Ca3TeO6 determined by a solid electrolyte EMF method
- NIST Webbook
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