1,4-Bis(2-hydroxyethyl)piperazine

• Formula: C₈H₁₈N₂O₂
• Molecular weight: 174.2407
• IUPAC Standard InChI: InChI=1S/C8H18N2O2/c11-7-5-9-1-2-10(4-3-9)6-8-12/h11-12H,1-8H2 Copy

  
• IUPAC Standard InChIKey: VARKIGWTYBUWNT-UHFFFAOYSA-N Copy
• CAS Registry Number: 122-96-3
• 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: N,N'-Bis(2-hydroxyethyl)piperazine; di(N-Hydroxyethyl)piperazine; 1,4-Piperazinediethanol; N,N'-Bis(β-hydroxyethyl)piperazine; N,N'-Di(2-hydroxyethyl)piperazine; N,N'-Dihydroxyethylpiperazine; Piperazine, N,N'-bis(2-hydroxyethyl)-; 1,4-Bis(β-hydroxyethyl)piperazine; 1,4-Di(2-hydroxyethyl)piperazine; NSC 26892; NSC 36645; piperazine-1,4-diethanol
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • IR Spectrum
  • Mass spectrum (electron ionization)
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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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Enthalpy of vaporization

Enthalpy of sublimation

Enthalpy of fusion

Entropy of fusion

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.

Lebedeva, Gutner, et al., 1984
Lebedeva, N.D.; Gutner, N.M.; Katin, Yu.A.; Kozlova, N.M.; Kiseleva, N.N.; Machinya, E.F.; Dobychin, S.L.; Thermochemical study of bis(hydroxyethyl)piperazine, N., N-dimethylpropylenediamine and 2,2-azodiisobutyric acid dinitrile, Zhur. Prikl. Khim. (Leningrad), 1984, 57(10), 2297-2301. [all data]

Lebedeva, Gutner, et al., 1984, 2
Lebedeva, N.D.; Gutner, N.M.; Katin, Y.A.; Kozlova, N.M.; Kiseleva, N.N.; Makhina, E.F.; Dobychin, S.K., Zh. Prikl. Khim., 1984, 57, 2297. [all data]

Verevkin, 2002
Verevkin, Sergey P., Relationships among strain energies of mono- and poly-cyclic cyclohexanoid molecules and strain of their component rings, The Journal of Chemical Thermodynamics, 2002, 34, 2, 263-275, https://doi.org/10.1006/jcht.2001.0896 . [all data]

Abdi and Meisen, 1998
Abdi, Majid Abedinzadegan; Meisen, Axel, Vapor Pressure Measurements of Bis(hydroxyethyl)piperazine and Tris(hydroxyethyl)ethylenediamine, J. Chem. Eng. Data, 1998, 43, 2, 133-137, https://doi.org/10.1021/je970146m . [all data]

Lebedeva, Gutner, et al., 1984, 3
Lebedeva, N.D.; Gutner, N.M.; Katin, Yu.A.; Kozlova, N.M.; Kiseleva, N.N.; Makhina, E.F.; Dobychin, S.L., Thermochemical study of bis-hydroxyethylpiperazine, N,N-dimethylpropylenediamine, and 2,2-azodiisobutyrodinitrile, J. Appl. Chem. USSR, 1984, 57, 2118-2122. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]

Notes

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• Symbols used in this document:
  

  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions
  ΔvapH	Enthalpy of vaporization

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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