Krypton
- Formula: Kr
- Molecular weight: 83.798
- IUPAC Standard InChIKey: DNNSSWSSYDEUBZ-UHFFFAOYSA-N
- CAS Registry Number: 7439-90-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Kr; UN 1056; UN 1970
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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 119.78 | K | N/A | Ziegler, Yarbrough, et al., 1964 | Uncertainty assigned by TRC = 0.05 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 115.76 | K | N/A | Ziegler, Yarbrough, et al., 1964 | Uncertainty assigned by TRC = 0.08 K; TRC |
Ttriple | 116.1 | K | N/A | Lahr and Eversole, 1962 | Uncertainty assigned by TRC = 0.4 K; TRC |
Ttriple | 115.95 | K | N/A | Clusius and Weigand, 1940 | Uncertainty assigned by TRC = 0.2 K; See property X for dP/dT for c-l equil.; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ptriple | 0.7219 | atm | N/A | Ziegler, Yarbrough, et al., 1964 | Uncertainty assigned by TRC = 0.0006 atm; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 209.46 | K | N/A | Theeuwes and Bearman, 1970 | Uncertainty assigned by TRC = 0.02 K; PVT, VP measured up to 208 K. Tc from rect plot, equation. PRT, IPTS-48, PB with differential press. indicator, glc sensitive to 20 ppm impurity, none found.; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 54.4800 | atm | N/A | Theeuwes and Bearman, 1970 | Uncertainty assigned by TRC = 0.0544 atm; from Vapor pressure equation; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 11.0 | mol/l | N/A | Theeuwes and Bearman, 1970 | Uncertainty assigned by TRC = 0.109 mol/l; TRC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
126.68 to 208. | 4.2007 | 539.004 | 8.855 | Theeuwes and Bearman, 1970, 2 | Coefficents calculated by NIST from author's data. |
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.
Ziegler, Yarbrough, et al., 1964
Ziegler, W.T.; Yarbrough, D.W.; Mullins, J.C.,
Calculation of the Vapor Pressure and Heats of Vaporization and Sublimation of Liquids and Solids below One Atmosphere Pressure. VI. Krypton, Ga. Inst. Technol., Eng. Exp. Stn., Proj. A-764, Tech. Rep. No. 1, 1964. [all data]
Lahr and Eversole, 1962
Lahr, P.H.; Eversole, W.G.,
Compression Isotherms of Argon, Krypton, and Xenon Through the Freezing Zone,
J. Chem. Eng. Data, 1962, 7, 42-47. [all data]
Clusius and Weigand, 1940
Clusius, K.; Weigand, K.,
Melting Curves of the Gases A, Kr, Xe, CH4, CH3D, CD4, C2H4, C2H6, COS, and PH3 to 200 Atmospheres Pressure. The Chane of Volume on Melting,
Z. Phys. Chem., Abt. B, 1940, 46, 1-37. [all data]
Theeuwes and Bearman, 1970
Theeuwes, F.; Bearman, R.J.,
The p,V,T behaviour of dense fluids III. The vapor pressure and orthobaric densities of krypton,
J. Chem. Thermodyn., 1970, 2, 179-85. [all data]
Theeuwes and Bearman, 1970, 2
Theeuwes, F.; Bearman, R.J.,
The p,V,T Behavior of Dense Fluids. III. The Vapor Pressure and Orthobaric Density of Krypton,
J. Chem. Thermodyn., 1970, 2, 2, 179-185, https://doi.org/10.1016/0021-9614(70)90081-9
. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Ptriple Triple point pressure Tboil Boiling point Tc Critical temperature Ttriple Triple point temperature ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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