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Piperazine

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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:
BS - R.L. Brown and S.E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, M. Frenkel director
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein
DRB - D.R. Burgess

QuantityValueUnitsMethodReferenceComment
Tboil419.2KN/AWeast and Grasselli, 1989BS
Tboil418.15KN/AAnderson and Shimanskaya, 1969Uncertainty assigned by TRC = 2. K; TRC
Tboil415.15KN/AAroney and Le Fevre, 1960Uncertainty assigned by TRC = 1.5 K; TRC
QuantityValueUnitsMethodReferenceComment
Tfus383.2KN/AAnonymous, 1957Uncertainty assigned by TRC = 0.6 K; TRC
Tfus383.46KN/AWitschonke, 1954Uncertainty assigned by TRC = 0.3 K; TRC
Tfus384.55KN/AWitschonke, 1954Uncertainty assigned by TRC = 0.2 K; TRC
QuantityValueUnitsMethodReferenceComment
Ttriple384.6KN/ASteele, Chirico, et al., 1997Uncertainty assigned by TRC = 0.3 K; TRC
QuantityValueUnitsMethodReferenceComment
Tc661.KN/ASteele, Chirico, et al., 1997Uncertainty assigned by TRC = 2. K; TRC
QuantityValueUnitsMethodReferenceComment
Pc58.00barN/ASteele, Chirico, et al., 1997Uncertainty assigned by TRC = 2.00 bar; derived from fit of obs. vapor pressure; TRC
QuantityValueUnitsMethodReferenceComment
rhoc3.738mol/lN/ASteele, Chirico, et al., 1997Uncertainty assigned by TRC = 0.29 mol/l; TRC
QuantityValueUnitsMethodReferenceComment
Deltasub67.0 ± 6.3kJ/molEAn, Zhang, et al., 1981ALS
Deltasub66.8kJ/molN/AAn, Zhang, et al., 1981DRB

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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.

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Anderson and Shimanskaya, 1969
Anderson, A.A.; Shimanskaya, M.V., Gas-Liquid Chromatography of some Aliphatic and Heterocyclic Polyfunctional Amines: II. Solution Thermodyn. of Amines in Fix. Phas., Latv. PSR Zinat. Akad. Vestis, Kim. Ser., 1969, No. 5, 527. [all data]

Aroney and Le Fevre, 1960
Aroney, M.; Le Fevre, R.J.W., Molecular polarizability. The conformation of various n-substituted anilines, piperidines, and piperazines, J. Chem. Soc., 1960, 1960, 2161. [all data]

Anonymous, 1957
Anonymous, R., , Am. Pet. Inst. Res. Proj. 6, Carnegie-Mellon Univ., 1957. [all data]

Witschonke, 1954
Witschonke, C.R., Freezing point and purity data for some organic compounds, Anal. Chem., 1954, 26, 562-4. [all data]

Steele, Chirico, et al., 1997
Steele, W.V.; Chirico, R.D.; Knipmeyer, S.E.; Nguyen, A.; Smith, N.K., Thermocynamic Properties and Ideal-Gas Enthalpies of Formation for Carbonate, Piperazine, Hexachloroprop-1-ene, Tetrakis(dimethylamino) ethylene, N,N'-Bis(2-hydroxyethyl)ethylenediamine, and 1,2,4-Tr, J. Chem. Eng. Data, 1997, 42, 1037-52. [all data]

An, Zhang, et al., 1981
An, X.-W.; Zhang, Z.-L.; Wang, S.-N.; Yan, J.-Q.; Hu, R.-H., Investigation on bond energies: the heat of combustion of hippuric acid, piperazine and azacycloheptane, Acta Chim. Sin., 1981, 39, 485-492. [all data]


Notes

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