Nitrogen

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.


Gas phase thermochemistry data

Go To: Top, Phase change data, 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.

Quantity Value Units Method Reference Comment
gas,1 bar191.609 ± 0.004J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar191.61J/mol*KReviewChase, 1998Data last reviewed in March, 1977

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

View plot Requires a JavaScript / HTML 5 canvas capable browser.

View table.

Temperature (K) 100. to 500.500. to 2000.2000. to 6000.
A 28.9864119.5058335.51872
B 1.85397819.887051.128728
C -9.647459-8.598535-0.196103
D 16.635371.3697840.014662
E 0.0001170.527601-4.553760
F -8.671914-4.935202-18.97091
G 226.4168212.3900224.9810
H 0.00.00.0
ReferenceChase, 1998Chase, 1998Chase, 1998
Comment Data last reviewed in March, 1977; New parameter fit January 2009 Data last reviewed in March, 1977; New parameter fit January 2009 Data last reviewed in March, 1977; New parameter fit January 2009

Phase change data

Go To: Top, Gas phase thermochemistry data, 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 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
Tboil77.34KN/AJacobsen, Stewart, et al., 1986TRC
Tboil77.4KN/AStreng, 1971Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Tfus63.3KN/AStreng, 1971Uncertainty assigned by TRC = 0.3 K; TRC
Quantity Value Units Method Reference Comment
Ttriple63.14KN/AJacobsen, Stewart, et al., 1986TRC
Ttriple63.14KN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.005 K; TRC
Ttriple63.14KN/AHenning and Otto, 1936Uncertainty assigned by TRC = 0.06 K; temperature measured with He gas thermometer; TRC
Ttriple63.13KN/AGiauque and Clayton, 1933Crystal phase 1 phase; Uncertainty assigned by TRC = 0.06 K; TRC
Quantity Value Units Method Reference Comment
Ptriple0.1252barN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.0005 bar; TRC
Ptriple0.1253barN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.0002 bar; TRC
Ptriple0.126barN/AHenning and Otto, 1936Uncertainty assigned by TRC = 0.0007 bar; TRC
Ptriple0.1253barN/AGiauque and Clayton, 1933Crystal phase 1 phase; Uncertainty assigned by TRC = 0.0001 bar; Average Pressure; TRC
Quantity Value Units Method Reference Comment
Tc126.19KN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.01 K; TRC
Tc126.2KN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.05 K; TRC
Tc126.2KN/AWeber, 1970Uncertainty assigned by TRC = 0.2 K; IPTS-68, critical point not observed and Tc taken from literature but equation would allow pc to be calculated. Tc unct. several tenths K. "Ultra-high" purity nitrogen.; TRC
Tc128.45KN/ACardoso, 1915Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Pc33.978barN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.007 bar; TRC
Pc34.00barN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.05 bar; TRC
Pc3.0698barN/ACardoso, 1915Uncertainty assigned by TRC = 0.003 bar; TRC
Pc3.0682barN/ACardoso, 1915Uncertainty assigned by TRC = 0.003 bar; TRC
Quantity Value Units Method Reference Comment
ρc11.18mol/lN/AJacobsen, Stewart, et al., 1986Uncertainty assigned by TRC = 0.02 mol/l; TRC
ρc11.2mol/lN/AAngus, de Reuck, et al., 1979Uncertainty assigned by TRC = 0.02 mol/l; TRC

Enthalpy of vaporization

ΔvapH (kJ/mol) Temperature (K) Reference Comment
6.178.Edejer and Thodos, 1967Based on data from 63. to 126. K.; AC
5.677.Giauque and Clayton, 1933, 2AC

Antoine Equation Parameters

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

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
63.14 to 126.3.7362264.651-6.788Edejer and Thodos, 1967Coefficents calculated by NIST from author's data.
63.14 to 78.003.63792257.877-6.344Moussa, Muijlwijk, et al., 1966Coefficents calculated by NIST from author's data.

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:


Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Phase change data, 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.

Mass spectrum
For Zoom
1.) Enter the desired X axis range (e.g., 100, 200)
2.) Check here for automatic Y scaling
3.) Press here to zoom

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 D.HENNEBERG, MAX-PLANCK INSTITUTE, MULHEIM, WEST GERMANY
NIST MS number 61309

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, 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.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Jacobsen, Stewart, et al., 1986
Jacobsen, R.T.; Stewart, R.B.; Jahangiri, M., Termodynamic Properties of Nitrogen from the Freezing Line to 2000 K at Pressures to 1000 MPa, J. Phys. Chem. Ref. Data, 1986, 15, 735-909. [all data]

Streng, 1971
Streng, A.G., Miscibility and Compatibility of Some Liquid and Solidified Gases at Low Temperature, J. Chem. Eng. Data, 1971, 16, 357. [all data]

Angus, de Reuck, et al., 1979
Angus, S.; de Reuck, K.M.; Armstrong, B.; Jacobsen, R.T.; Stewart, R.B., International Thermodynamic Tables of the Fluid State - 6 Nitrogen, Pergamon, New York, 1979. [all data]

Henning and Otto, 1936
Henning, F.; Otto, J., Vapor pressure curves and triple points in the temperature region from 14 to 90 k, Phys. Z., 1936, 37, 633-8. [all data]

Giauque and Clayton, 1933
Giauque, W.F.; Clayton, J.O., Heat Capacity and Entropy of Nitrogen. Heat of Vaporization. Vapor Pressure of Solid and Liquid. The Reaction 1/2 N2 + 1/2 O2 = NO from Spectroscopic Data, J. Am. Chem. Soc., 1933, 55, 4875. [all data]

Weber, 1970
Weber, L.A., Some vapor pressure and P,V,T data on nitrogen in t he range 65 to 140 K, J. Chem. Thermodyn., 1970, 2, 839-846. [all data]

Cardoso, 1915
Cardoso, E., Study of the Critical Point of Several Difficultly LIquifiable Gases: Nitrogen, Carbon Monoxide, Oxygen and Methane, J. Chim. Phys. Phys.-Chim. Biol., 1915, 13, 312. [all data]

Edejer and Thodos, 1967
Edejer, Merardo P.; Thodos, George, Vapor pressures of liquid nitrogen between the triple and critical points, J. Chem. Eng. Data, 1967, 12, 2, 206-209, https://doi.org/10.1021/je60033a014 . [all data]

Giauque and Clayton, 1933, 2
Giauque, W.F.; Clayton, J.O., The Heat Capacity and Entropy of Nitrogen. Heat of Vaporization. Vapor Pressures of Solid and Liquid. The Reaction 1/2 N 2 + 1/2 O 2 = NO from Spectroscopic Data, J. Am. Chem. Soc., 1933, 55, 12, 4875-4889, https://doi.org/10.1021/ja01339a024 . [all data]

Moussa, Muijlwijk, et al., 1966
Moussa, M.R.; Muijlwijk, R.; van Dijk, H., The Vapour Pressure of Liquid Nitrogen, Physica (Amsterdam), 1966, 32, 5, 900-912, https://doi.org/10.1016/0031-8914(66)90021-8 . [all data]


Notes

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