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
Δfgas19.9 ± 0.86kcal/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
Δfliquid11.55 ± 0.86kcal/molCcbDonovan, Shomate, et al., 1960Reanalyzed by Cox and Pilcher, 1970, Original value = 11.90 kcal/mol; ALS
Quantity Value Units Method Reference Comment
Δcliquid-472.91 ± 0.86kcal/molCcbDonovan, Shomate, et al., 1960Reanalyzed by Cox and Pilcher, 1970, Original value = -473.28 ± 0.43 kcal/mol; ALS
Δcliquid-473.15 ± 0.70kcal/molCcbAston, Rock, et al., 1952Reanalyzed by Cox and Pilcher, 1970, Original value = -472.65 ± 0.70 kcal/mol; ALS
Quantity Value Units Method Reference Comment
liquid47.861cal/mol*KN/AAston, Wood, et al., 1953DH

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
39.209298.15Aston, 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
Δvap8.418kcal/molN/AMajer and Svoboda, 1985 
Δvap8.37 ± 0.04kcal/molVAston, Wood, et al., 1953, 3ALS

Reduced pressure boiling point

Tboil (K) Pressure (atm) Reference Comment
336.20.991Aldrich Chemical Company Inc., 1990BS

Enthalpy of vaporization

ΔvapH (kcal/mol) Temperature (K) Method Reference Comment
8.3659298.15N/AAston, Wood, et al., 1953P = 20.90 kPa; DH
7.780336.2N/AMajer and Svoboda, 1985 
8.15284.N/ABourret-Courchesne, Ye, et al., 2000Based on data from 267. to 303. K.; AC
8.72277.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 (cal/mol*K) Temperature (K) Reference Comment
28.06298.15Aston, Wood, et al., 1953P; DH

Antoine Equation Parameters

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

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Temperature (K) A B C Reference Comment
237.74 to 293.084.707451388.51-40.613Aston, Wood, et al., 1953Coefficents calculated by NIST from author's data.

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
2.40741215.95Aston, Wood, et al., 1953DH
2.407216.Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (cal/mol*K) Temperature (K) Reference Comment
11.15215.95Aston, 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:


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

Gas Phase Spectrum

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IR spectrum
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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Sadtler Research Labs Under US-EPA Contract
State gas

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


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

View image of digitized spectrum (can be printed in landscape orientation).

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-1126
NIST MS number 229632

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, 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.

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]


Notes

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