titanium
- Formula: Ti
- Molecular weight: 47.867
- IUPAC Standard InChI: InChI=1S/Ti
- IUPAC Standard InChIKey: RTAQQCXQSZGOHL-UHFFFAOYSA-N
- CAS Registry Number: 7440-32-6
- Chemical structure:
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- Information on this page:
- Other data available:
- Data at other public NIST sites:
- NIST Atomic Spectra Database - Lines Holdings (on physics web site)
- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
- NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Condensed phase thermochemistry data
Go To: Top, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | 13.65 | kJ/mol | Review | Chase, 1998 | Data last reviewed in June, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 39.18 | J/mol*K | Review | Chase, 1998 | Data last reviewed in June, 1979 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 30.72 ± 0.10 | J/mol*K | Review | Cox, Wagman, et al., 1984 | CODATA Review value |
Liquid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1939. to 3630.956 |
|---|---|
| A | 47.23694 |
| B | 1.975192×10-8 |
| C | -5.335145×10-9 |
| D | 4.904109×10-10 |
| E | 1.564855×10-8 |
| F | -22.05273 |
| G | 66.20218 |
| H | 13.65202 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in June, 1979 |
Solid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 298. to 700. | 700. to 1700. | 298. to 1939. |
|---|---|---|---|
| A | 22.61942 | 44.37174 | 23.05660 |
| B | 18.98795 | -44.09225 | 5.541331 |
| C | -18.18735 | 31.70602 | -2.055881 |
| D | 7.080792 | 0.052209 | 1.611745 |
| E | -0.143457 | 0.036168 | -0.056075 |
| F | -7.922279 | -12.72011 | -0.433228 |
| G | 52.40962 | 93.08772 | 64.12691 |
| H | 0.000000 | 0.000000 | 6.860003 |
| Reference | Chase, 1998 | Chase, 1998 | Chase, 1998 |
| Comment | α phase; Data last reviewed in June, 1979 | α phase; Data last reviewed in June, 1979 | β phase; Data last reviewed in June, 1979 |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A.,
CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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