# titanium oxide

**Formula:**OTi**Molecular weight:**63.866**IUPAC Standard InChI:**- InChI=1S/O.Ti
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**IUPAC Standard InChIKey:**OGIDPMRJRNCKJF-UHFFFAOYSA-N**CAS Registry Number:**12137-20-1**Chemical structure:**

This structure is also available as a 2d Mol file or as a computed 3d SD file

The 3d structure may be viewed using Java or Javascript.**Other names:**Titanium monoxide-
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## Gas phase thermochemistry data

**Go To:** Top, Condensed phase thermochemistry data, References, Notes

Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|

_{f}H°_{gas} | 13.00 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1973 |

Quantity | Value | Units | Method | Reference | Comment |

S°_{gas,1 bar} | 55.798 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1973 |

### Gas Phase Heat Capacity (Shomate Equation)

C_{p}° = A + B*t + C*t^{2} + D*t^{3} +
E/t^{2}

H° − H°_{298.15}= A*t + B*t^{2}/2 +
C*t^{3}/3 + D*t^{4}/4 − E/t + F − H

S° = A*ln(t) + B*t + C*t^{2}/2 + D*t^{3}/3 −
E/(2*t^{2}) + G

C_{p} = heat capacity (cal/mol*K)

H° = standard enthalpy (kcal/mol)

S° = standard entropy (cal/mol*K)

t = temperature (K) / 1000.

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Temperature (K) | 4500. - 6000. |
---|---|

A | 8.665727 |

B | -0.646401 |

C | 0.404266 |

D | -0.036270 |

E | 2.343619 |

F | 12.38905 |

G | 67.26530 |

H | 13.00000 |

Reference | Chase, 1998 |

Comment | Data last reviewed in December, 1973 |

## Condensed phase thermochemistry data

**Go To:** Top, Gas phase thermochemistry data, References, Notes

Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|

_{f}H°_{liquid} | -118.05 | kcal/mol | Review | Chase, 1998 | Data last reviewed in December, 1973 |

Quantity | Value | Units | Method | Reference | Comment |

S°_{liquid,1 bar} | 14.37 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1973 |

Quantity | Value | Units | Method | Reference | Comment |

_{f}H°_{solid} | -129.70 | kcal/mol | Review | Chase, 1998 | «alpha» phase; Data last reviewed in December, 1973 |

### Liquid Phase Heat Capacity (Shomate Equation)

C_{p}° = A + B*t + C*t^{2} + D*t^{3} +
E/t^{2}

H° − H°_{298.15}= A*t + B*t^{2}/2 +
C*t^{3}/3 + D*t^{4}/4 − E/t + F − H

S° = A*ln(t) + B*t + C*t^{2}/2 + D*t^{3}/3 −
E/(2*t^{2}) + G

C_{p} = heat capacity (cal/mol*K)

H° = standard enthalpy (kcal/mol)

S° = standard entropy (cal/mol*K)

t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) | 2023. - 4500. |
---|---|

A | 15.99998 |

B | 0.000009 |

C | -0.000002 |

D | 1.655581×10^{-7} |

E | 0.000012 |

F | -125.7326 |

G | 28.42973 |

H | -118.0543 |

Reference | Chase, 1998 |

Comment | Data last reviewed in December, 1973 |

### Solid Phase Heat Capacity (Shomate Equation)

C_{p}° = A + B*t + C*t^{2} + D*t^{3} +
E/t^{2}

H° − H°_{298.15}= A*t + B*t^{2}/2 +
C*t^{3}/3 + D*t^{4}/4 − E/t + F − H

S° = A*ln(t) + B*t + C*t^{2}/2 + D*t^{3}/3 −
E/(2*t^{2}) + G

C_{p} = heat capacity (cal/mol*K)

H° = standard enthalpy (kcal/mol)

S° = standard entropy (cal/mol*K)

t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) | 298. - 2023. | 298. - 2023. |
---|---|---|

A | 9.987591 | 9.983160 |

B | 4.360761 | 4.370510 |

C | -0.089081 | -0.095437 |

D | 0.015586 | 0.016853 |

E | -0.154094 | -0.153905 |

F | -133.3890 | -132.3870 |

G | 18.23110 | 19.01460 |

H | -129.7000 | -128.7000 |

Reference | Chase, 1998 | Chase, 1998 |

Comment | «alpha» phase; Data last reviewed in December, 1973 | «beta» phase; Data last reviewed in December, 1973 |

## References

**Go To:** Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Notes

**Chase, 1998**

Chase, M.W., Jr.,
*NIST-JANAF Themochemical Tables, Fourth Edition*,
**J. Phys. Chem. Ref. Data, Monograph 9**, 1998, 1-1951. [all data]

## Notes

**Go To:** Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References

- Symbols used in this document:

S° _{gas,1 bar}Entropy of gas at standard conditions (1 bar) S° _{liquid,1 bar}Entropy of liquid at standard conditions (1 bar) _{f}H°_{gas}Enthalpy of formation of gas at standard conditions _{f}H°_{liquid}Enthalpy of formation of liquid at standard conditions _{f}H°_{solid}Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69:
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