Lead(II) heptanoate
- Formula: C14H26O4Pb
- Molecular weight: 465.6
- CAS Registry Number: 21180-26-7
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Condensed phase thermochemistry data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 184. | 345. | Adeosun and Sime, 1978 | crystaline, II phase; Mean value, 341 to 351 K. Data only graphically for c,IV. Data also for c,I, 363 to 371 K and liquid, 413 to 453 K. |
Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 4.0870 | 336.6 | crystaline, IV | crystaline, III | Adeosun and Sime, 1978 | c,II, c,II, c,I are mesophases. |
| 2.032 | 356.8 | crystaline, III | crystaline, II | Adeosun and Sime, 1978 | |
| 2.318 | 361.3 | crystaline, II | crystaline, I | Adeosun and Sime, 1978 | |
| 0.3346 | 374.7 | crystaline, I | liquid | Adeosun and Sime, 1978 |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 12. | 336.6 | crystaline, IV | crystaline, III | Adeosun and Sime, 1978 | c,II, |
| 5.7 | 356.8 | crystaline, III | crystaline, II | Adeosun and Sime, 1978 | |
| 6.5 | 361.3 | crystaline, II | crystaline, I | Adeosun and Sime, 1978 | |
| 0.88 | 374.7 | crystaline, I | liquid | Adeosun and Sime, 1978 |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Adeosun and Sime, 1978
Adeosun, S.O.; Sime, S.J.,
The properties of molten carboxylates: Part 7. Odd-even variations in melting and mesophase formation in the lead(II) carboxylates,
J. Thermal Anal., 1978, 27, 319-327. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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