Piperazine, 1,4-dimethyl-

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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
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil404.15KN/ALanum and Morris, 1969Uncertainty assigned by TRC = 0.3 K; TRC
Tboil403.65KN/AAroney and Le Fevre, 1960Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Tfus272.15KN/ALanum and Morris, 1969Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Δvap9.85 ± 0.1kcal/molGSEfimova, Emel'yanenko, et al., 2010Based on data from 268. to 311. K.; AC
Δvap10.5 ± 0.07kcal/molGSVerevkin, 1998Based on data from 270. to 309. K.; AC

Reduced pressure boiling point

Tboil (K) Pressure (atm) Reference Comment
404.70.987Aldrich Chemical Company Inc., 1990BS

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
10.6 ± 0.07289.GSVerevkin, 1998Based on data from 270. to 309. K.; AC
9.94291.AStephenson and Malanowski, 1987Based on data from 276. to 319. K. See also Cabani, Conti, et al., 1975.; AC

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:


IR Spectrum

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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: Coblentz Society, Inc.

Spectrum

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Additional Data

View scan of original (hardcopy) spectrum.

Owner COBLENTZ SOCIETY
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Source reference COBLENTZ NO. 5628
Date Not specified, most likely prior to 1970
Instrument Not specified, most likely a prism, grating, or hybrid spectrometer.
Data processing (NO SPECTRUM, ONLY SCANNED IMAGE IS AVAILABLE)

This IR spectrum is from the Coblentz Society's evaluated infrared reference spectra collection.


Mass spectrum (electron ionization)

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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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Mass spectrum
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Additional Data

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Due to licensing restrictions, this spectrum cannot be downloaded.

Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-1040
NIST MS number 229030

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References

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Lanum and Morris, 1969
Lanum, W.J.; Morris, J.C., Physical Properties of Some Sulfur and Nitrogen Compounds, J. Chem. Eng. Data, 1969, 14, 93-8. [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]

Efimova, Emel'yanenko, et al., 2010
Efimova, Anastasia A.; Emel'yanenko, Vladimir N.; Verevkin, Sergey P.; Chernyak, Yury, Vapour pressure and enthalpy of vaporization of aliphatic poly-amines, The Journal of Chemical Thermodynamics, 2010, 42, 3, 330-336, https://doi.org/10.1016/j.jct.2009.09.003 . [all data]

Verevkin, 1998
Verevkin, Sergey P., Thermochemistry of amines: strain in six-membered rings from experimental standard molar enthalpies of formation of morpholines and piperazines, The Journal of Chemical Thermodynamics, 1998, 30, 9, 1069-1079, https://doi.org/10.1006/jcht.1998.0371 . [all data]

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Cabani, Conti, et al., 1975
Cabani, Sergio; Conti, G.; Giannessi, D.; Lepori, L., Thermodynamic study of aqueous dilute solutions of organic compounds. Part 3.---Morpholines and piperazines, J. Chem. Soc., Faraday Trans. 1, 1975, 71, 0, 1154, https://doi.org/10.1039/f19757101154 . [all data]


Notes

Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References