Potassium thiocyanate
- Formula: CKNS
- Molecular weight: 97.181
- IUPAC Standard InChI: InChI=1S/CHNS.K/c2-1-3;/h3H;/q;+1/p-1
- IUPAC Standard InChIKey: ZNNZYHKDIALBAK-UHFFFAOYSA-M
- CAS Registry Number: 333-20-0
- 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. - Species with the same structure:
- Other names: Thiocyanic acid, potassium salt; Arterocyn; Aterocyn; Kyonate; Potassium isothiocyanate; Potassium rhodanate; Potassium rhodanide; Potassium sulfocyanate; Potassium thiocyanide; Rhocya; Rodanca; Rhodanide; Thio-cara
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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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 29.71 | cal/mol*K | N/A | Vanderzee and Westrum, 1970 |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 21.16 | 298.15 | Vanderzee and Westrum, 1970 | T = 5 to 340 K. |
Phase change data
Go To: Top, Condensed phase thermochemistry data, References, Notes
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 |
|---|---|---|---|---|---|
| 0.141 to 0.169 | 413. | crystaline, II | crystaline, I | Hamilton and House, 1992 | Dependent on heating/cooling rate. |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.342 to 0.409 | 413. | crystaline, II | crystaline, I | Hamilton and House, 1992 | Dependent |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Vanderzee and Westrum, 1970
Vanderzee, C.E.; Westrum, E.F., Jr.,
Heat capacities and thermodynamic properties of ammonium and potassium thiocyanates from 5 to 340K,
J. Chem. Thermodynam., 1970, 2, 417-429. [all data]
Hamilton and House, 1992
Hamilton, C.D.; House,
J.E., A DSC study of the phase transition in potassium thiocyanate,
Thermochim. Acta, 1992, 206, 91-94. [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 S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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