Nitrous oxide
- Formula: N2O
- Molecular weight: 44.0128
- IUPAC Standard InChIKey: GQPLMRYTRLFLPF-UHFFFAOYSA-N
- CAS Registry Number: 10024-97-2
- 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. - Other names: Nitrogen oxide (N2O); Dinitrogen monoxide; Dinitrogen oxide; Laughing gas; N2O; Factitious air; Hyponitrous acid anhydride; Nitrogen oxide; UN 1070; UN 2201; Nitrogen monoxide; Nitral
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Phase change data
Go To: Top, 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 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 |
---|---|---|---|---|---|
Ptriple | 0.87890 | bar | N/A | Fonseca and Lobo, 1989 | Uncertainty assigned by TRC = 0.0001 bar; TRC |
Ptriple | 0.8791 | bar | N/A | Calado, Rebelo, et al., 1986 | Uncertainty assigned by TRC = 0.00008 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 309.56 | K | N/A | Ohgaki, Umezono, et al., 1990 | Uncertainty assigned by TRC = 0.15 K; TRC |
Tc | 309.65 | K | N/A | Li and Kiran, 1988 | Uncertainty assigned by TRC = 0.2 K; TRC |
Tc | 309.49 | K | N/A | Tsiklis and Prokhorov, 1967 | TRC |
Tc | 309.55 | K | N/A | Cook, 1953 | Uncertainty assigned by TRC = 0.5 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 72.38 | bar | N/A | Ohgaki, Umezono, et al., 1990 | Uncertainty assigned by TRC = 0.20 bar; TRC |
Pc | 72.70 | bar | N/A | Li and Kiran, 1988 | Uncertainty assigned by TRC = 0.50 bar; TRC |
Pc | 72.346 | bar | N/A | Cook, 1953 | Uncertainty assigned by TRC = 0.5066 bar; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.0955 | l/mol | N/A | Li and Kiran, 1988 | Uncertainty assigned by TRC = 0.002 l/mol; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 10.3 | mol/l | N/A | Ohgaki, Umezono, et al., 1990 | Uncertainty assigned by TRC = 0.1 mol/l; TRC |
ρc | 10.2 | mol/l | N/A | Tsiklis and Prokhorov, 1967 | Visual in pVT apparatus, Khodeeva and Lebedeva Russ. J. Phys. Chem. 1966, 40, 1668.; TRC |
ρc | 10.3 | mol/l | N/A | Cook, 1953 | Uncertainty assigned by TRC = 0.05 mol/l; TRC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
16.5 | 184.7 | Atake and Chihara, 1974 | AC |
16.1 | 221. | Hoge, 1945 | Based on data from 182. to 236. K.; AC |
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 |
---|---|---|---|---|---|
129.8 to 187.7 | 4.37799 | 621.077 | -44.659 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
25.1 ± 0.4 | 74. | LE | Bryson, Cazcarra, et al., 1974 | Based on data from 68. to 80. K.; AC |
24.6 | 161. | N/A | Blue and Giauque, 1935 | Based on data from 148. to 182. K.; AC |
23.6 | 113. | MG | Black, van Praagh, et al., 1930 | Based on data from 103. to 123. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
6.5 | 182.4 | Atake and Chihara, 1974 | AC |
IR Spectrum
Go To: Top, Phase change data, Mass spectrum (electron ionization), References, Notes
Data compiled by: Coblentz Society, Inc.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Phase change data, IR Spectrum, 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
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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. |
---|---|
NIST MS number | 70 |
References
Go To: Top, 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.
Fonseca and Lobo, 1989
Fonseca, I.M.A.; Lobo, L.Q.,
Thermodynamics of liquid mixtures of xenon and methyl fluoride,
Fluid Phase Equilib., 1989, 47, 249. [all data]
Calado, Rebelo, et al., 1986
Calado, J.C.G.; Rebelo, L.P.N.; Streett, W.B.; Zollweg, J.A.,
Thermodynamics of liquid (dimethylether + xenon),
J. Chem. Thermodyn., 1986, 18, 931. [all data]
Ohgaki, Umezono, et al., 1990
Ohgaki, K.; Umezono, S.; Katayama, T.,
Pressure-density-temperature (p-ρ-T) relations of fluoroform, nitrous oxide, and propene in the critical region,
J. Supercrit. Fluids, 1990, 3, 78-84. [all data]
Li and Kiran, 1988
Li, L.; Kiran, E.,
Gas-Liquid Critical Properties of Methylamine + Nitrous Oxide and Methylamine + Ethylene Binary Mixtures,
J. Chem. Eng. Data, 1988, 33, 342. [all data]
Tsiklis and Prokhorov, 1967
Tsiklis, D.S.; Prokhorov, V.M.,
Phase equilibria in systems containing fluorine compounds,
Zh. Fiz. Khim., 1967, 41, 2195-9. [all data]
Cook, 1953
Cook, D.,
Vapor Pressure and Orthobaric Density of Nitrous Oxide,
Trans. Faraday Soc., 1953, 49, 716. [all data]
Atake and Chihara, 1974
Atake, Tooru; Chihara, Hideaki,
A New Condensed Gas Calorimeter. Thermodynamic Properties of Solid and Liquid Dinitrogen Oxide,
Bull. Chem. Soc. Jpn., 1974, 47, 9, 2126-2136, https://doi.org/10.1246/bcsj.47.2126
. [all data]
Hoge, 1945
Hoge, H.J.,
Vapor pressure, latent heat of vaporization, and triple-point temperature of N2O,
J. RES. NATL. BUR. STAN., 1945, 34, 3, 281-17, https://doi.org/10.6028/jres.034.015
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Bryson, Cazcarra, et al., 1974
Bryson, Charles E.; Cazcarra, Victor; Levenson, Leonard L.,
Sublimation rates and vapor pressures of water, carbon dioxide, nitrous oxide, and xenon,
J. Chem. Eng. Data, 1974, 19, 2, 107-110, https://doi.org/10.1021/je60061a021
. [all data]
Blue and Giauque, 1935
Blue, R.W.; Giauque, W.F.,
The Heat Capacity and Vapor Pressure of Solid and Liquid Nitrous Oxide. The Entropy from its Band Spectrum,
J. Am. Chem. Soc., 1935, 57, 6, 991-997, https://doi.org/10.1021/ja01309a008
. [all data]
Black, van Praagh, et al., 1930
Black, H.K.; van Praagh, G.; Topley, B.,
Note on the vapour pressure of solid nitrous oxide,
Trans. Faraday Soc., 1930, 26, 196, https://doi.org/10.1039/tf9302600196
. [all data]
Notes
Go To: Top, Phase change data, IR Spectrum, Mass spectrum (electron ionization), References
- Symbols used in this document:
Pc Critical pressure Ptriple Triple point pressure Tc Critical temperature Vc Critical volume ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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