Thiourea, N,N'-dibutyl-

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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
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus337.5KN/ATerenzi and Piacente, 1994Crystal phase 1 phase; Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Δsub33.7 ± 0.5kcal/molBDella Gatta, Józwiak, et al., 2000AC
Δsub32.7 ± 0.72kcal/molCTerenzi and Piacente, 1994, 2AC

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
25.1 ± 0.48386.ME,TETerenzi and Piacente, 1994, 2Based on data from 368. - 403. K.; AC

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Method Reference Comment
6.773338.DSCDella Gatta, Józwiak, et al., 2000AC

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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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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-4247
NIST MS number 232183

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References

Go To: Top, Phase change data, 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.

Terenzi and Piacente, 1994
Terenzi, L.; Piacente, V., vapour pressures and vaporization enthalpies of thiourea and a homologous series of its 1,3-dialkyl derivatives, Thermochim. Acta, 1994, 235, 61-6. [all data]

Della Gatta, Józwiak, et al., 2000
Della Gatta, Giuseppe; Józwiak, Malgorzata; Brunetti, Bruno; Abate, Lorenzo, Enthalpies and entropies of fusion and of sublimation at the temperature 298.15 K of thiourea and sevenN-alkylthioureas, The Journal of Chemical Thermodynamics, 2000, 32, 8, 979-997, https://doi.org/10.1006/jcht.2000.0662 . [all data]

Terenzi and Piacente, 1994, 2
Terenzi, L.; Piacente, V., Vapour pressures and vaporization enthalpies of thiourea and a homologous series of its 1,3-dialkyl derivatives, Thermochimica Acta, 1994, 235, 1, 61-66, https://doi.org/10.1016/0040-6031(94)80083-9 . [all data]


Notes

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