Hydrazine, 1,1-dimethyl-
- Formula: C2H8N2
- Molecular weight: 60.0983
- IUPAC Standard InChIKey: RHUYHJGZWVXEHW-UHFFFAOYSA-N
- CAS Registry Number: 57-14-7
- 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. - Species with the same structure:
- Other names: as-Dimethylhydrazine; Dimazin; Dimazine; Hydrazine, N,N-dimethyl-; N,N-Dimethylhydrazine; UDMH; 1,1-Dimethylhydrazine; (CH3)2NNH2; Unsym-dimethylhydrazine; Dimethylhydrazine, unsymmetrical; Dimethylhydrazine, unsym.; 1,1-Dimethylhydrazin; asymmetric Dimethylhydrazine; uns-Dimethylhydrazine; Niesymetryczna dwu metylohydrazyna; Rcra waste number U098; UN 1163; Unsymmetrical dimethylhydrazine; u-Dimethylhydrazine; gem-Dimethylhydrazine; NSC 60517
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
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.
Condensed phase thermochemistry data
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, 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:
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 |
---|---|---|---|---|---|
ΔfH°liquid | 48.3 ± 3.6 | kJ/mol | Ccb | Donovan, Shomate, et al., 1960 | Reanalyzed by Cox and Pilcher, 1970, Original value = 49.79 kJ/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -1978.7 ± 3.6 | kJ/mol | Ccb | Donovan, Shomate, et al., 1960 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1980.2 ± 1.8 kJ/mol; ALS |
ΔcH°liquid | -1979.7 ± 2.9 | kJ/mol | Ccb | Aston, Rock, et al., 1952 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1977.6 ± 2.9 kJ/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 200.25 | J/mol*K | N/A | Aston, Wood, et al., 1953 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
164.05 | 298.15 | Aston, Wood, et al., 1953 | T = 13 to 300 K.; DH |
IR Spectrum
Go To: Top, Condensed phase thermochemistry data, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
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
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
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 |
Mass spectrum (electron ionization)
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Gas Chromatography, References, Notes
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
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
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 |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), References, Notes
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
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 527. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
References
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, 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]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - 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.