Phthalazin-1-one
- Formula: C8H6N2O
- Molecular weight: 146.1460
- IUPAC Standard InChI: InChI=1S/C8H6N2O/c11-8-7-4-2-1-3-6(7)5-9-10-8/h1-5H,(H,10,11)
- IUPAC Standard InChIKey: IJAPPYDYQCXOEF-UHFFFAOYSA-N
- CAS Registry Number: 119-39-1
- 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: Phthalazinone; 1(2H)-Phthalazinone; 1-Phthalazinol; Phthalazone; phthalazin-1(2H)-one
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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: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 107.4 ± 0.5 | kJ/mol | ME | Ribeiro da Silva and Cabral, 2008 | Based on data from 348. to 368. K. |
Enthalpy of sublimation
| ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 104.4 ± 0.5 | 358. | ME | Ribeiro da Silva and Cabral, 2008 | Based on data from 348. to 368. K. |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ribeiro da Silva and Cabral, 2008
Ribeiro da Silva, Manuel A.V.; Cabral, Joana I.T.A.,
Experimental study on the thermochemistry of 1-(2H)-phthalazinone and phthalhydrazide,
The Journal of Chemical Thermodynamics, 2008, 40, 5, 829-835, https://doi.org/10.1016/j.jct.2008.01.010
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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