Hydrazine, 1,1-dimethyl-

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Gas phase thermochemistry 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 by: Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Δfgas83.3 ± 3.6kJ/molN/ADonovan, Shomate, et al., 1960Value computed using ΔfHliquid° value of 48.3±3.6 kj/mol from Donovan, Shomate, et al., 1960 and ΔvapH° value of 35±0.2 kj/mol from missing citation.

Condensed phase thermochemistry 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Δfliquid48.3 ± 3.6kJ/molCcbDonovan, Shomate, et al., 1960Reanalyzed by Cox and Pilcher, 1970, Original value = 49.79 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Δcliquid-1978.7 ± 3.6kJ/molCcbDonovan, Shomate, et al., 1960Reanalyzed by Cox and Pilcher, 1970, Original value = -1980.2 ± 1.8 kJ/mol; ALS
Δcliquid-1979.7 ± 2.9kJ/molCcbAston, Rock, et al., 1952Reanalyzed by Cox and Pilcher, 1970, Original value = -1977.6 ± 2.9 kJ/mol; ALS
Quantity Value Units Method Reference Comment
liquid200.25J/mol*KN/AAston, Wood, et al., 1953DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
164.05298.15Aston, Wood, et al., 1953T = 13 to 300 K.; DH

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 - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil337.1KN/AWeast and Grasselli, 1989BS
Tboil336.2KN/AMajer and Svoboda, 1985 
Quantity Value Units Method Reference Comment
Tfus216.KN/AMcMillan, 1967Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple215.95KN/AAston, Wood, et al., 1953, 2Uncertainty assigned by TRC = 0.02 K; TRC
Quantity Value Units Method Reference Comment
Δvap35.22kJ/molN/AMajer and Svoboda, 1985 
Δvap35.0 ± 0.2kJ/molVAston, Wood, et al., 1953, 3ALS

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference Comment
336.21.00Aldrich Chemical Company Inc., 1990BS

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Method Reference Comment
35.003298.15N/AAston, Wood, et al., 1953P = 20.90 kPa; DH
32.55336.2N/AMajer and Svoboda, 1985 
34.1284.N/ABourret-Courchesne, Ye, et al., 2000Based on data from 267. to 303. K.; AC
36.5277.AStephenson and Malanowski, 1987Based on data from 238. to 292. K. See also Aston, Wood, et al., 1953 and Boublik, Fried, et al., 1984.; AC

Entropy of vaporization

ΔvapS (J/mol*K) Temperature (K) Reference Comment
117.4298.15Aston, Wood, et al., 1953P; DH

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
237.74 to 293.084.713161388.51-40.613Aston, Wood, et al., 1953Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
10.0726215.95Aston, Wood, et al., 1953DH
10.07216.Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
46.64215.95Aston, Wood, et al., 1953DH

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:


Gas Chromatography

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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

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillaryOV-101527.Zenkevich, 200525. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C

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.

Donovan, Shomate, et al., 1960
Donovan, T.M.; Shomate, C.H.; McBride, W.R., The heat of combustion of tetramethyltetrazene and 1,1-dimethylhydrazine, J. Phys. Chem., 1960, 64, 281-282. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Aston, Rock, et al., 1952
Aston, J.G.; Rock, E.J.; Isserow, S., The heats of combustion of the methyl substituted hydrazines and some observations on the burning of volatile liquids, J. Am. Chem. Soc., 1952, 74, 2484-24. [all data]

Aston, Wood, et al., 1953
Aston, J.G.; Wood, J.L.; Zolki, T.P., The thermodynamic properties and configuration of unsymmetrical dimethylhydrazine, J. Am. Chem. Soc., 1953, 75, 6202-6204. [all data]

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]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]

McMillan, 1967
McMillan, J.A., Hydrazine-1,1-Dimethylhydrazine Solid-Liquid Phase Diagram, J. Chem. Eng. Data, 1967, 12, 39. [all data]

Aston, Wood, et al., 1953, 2
Aston, J.G.; Wood, J.L.; Zolki, T.P., The Thermodynamic Properties and Configuration of Unsymmetrical Dimethylhydrazine, J. Am. Chem. Soc., 1953, 75, 6202. [all data]

Aston, Wood, et al., 1953, 3
Aston, J.G.; Wood, J.L.; Zolki, T.P., The thermodynamic properties and configuration of unsymmetrical dimethylhydrazine, J. Am. Chem. Soc., 1953, 75, 6202-62. [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]

Bourret-Courchesne, Ye, et al., 2000
Bourret-Courchesne, E.; Ye, Q.; Peters, D.W.; Arnold, J.; Ahmed, M.; Irvine, S.J.C.; Kanjolia, R.; Smith, L.M.; Rushworth, S.A., Pyrolysis of dimethylhydrazine and its co-pyrolysis with triethylgallium, Journal of Crystal Growth, 2000, 217, 1-2, 47-54, https://doi.org/10.1016/S0022-0248(00)00398-5 . [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]

Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E., The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [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]

Zenkevich, 2005
Zenkevich, I.G., Experimentally measured retention indices., 2005. [all data]


Notes

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