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
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • IR Spectrum
  • Mass spectrum (electron ionization)
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Phase change data

Go To: Top, References, Notes

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

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.

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

Go To: Top, Phase change data, References

• 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
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.