Benzene, 1,3-dinitro-
- Formula: C6H4N2O4
- Molecular weight: 168.1070
- IUPAC Standard InChIKey: WDCYWAQPCXBPJA-UHFFFAOYSA-N
- CAS Registry Number: 99-65-0
- 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: Benzene, m-dinitro-; m-Dinitrobenzene; 1,3-Dinitrobenzene; 2,4-Dinitrobenzene; Dwunitrobenzen; 1,3-Dinitrobenzol; meta-Dinitrobenzene; NSC 7189
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- 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, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, 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 | -36. | kJ/mol | Ccb | Swarts, 1914 | See 14SWA2; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -2908. | kJ/mol | Ccb | Swarts, 1914 | See 14SWA2; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔfH°solid | -27. ± 0.4 | kJ/mol | Ccb | Lebedeva, Ryadnenko, et al., 1971 | See Lebedeva, Rjadnenko, et al., 1969; ALS |
ΔfH°solid | -19.2 | kJ/mol | Ccb | Rinkenbach, 1930 | Author hf298_condensed[kcal/mol]=-6.86; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -2905. ± 0.4 | kJ/mol | Ccb | Lebedeva, Ryadnenko, et al., 1971 | See Lebedeva, Rjadnenko, et al., 1969; ALS |
ΔcH°solid | -2896.2 ± 2.9 | kJ/mol | Ccb | Badoche, 1939 | Reanalyzed by Cox and Pilcher, 1970, Original value = -2900.2 kJ/mol; ALS |
ΔcH°solid | -2911.6 | kJ/mol | Ccb | Burlot, 1939 | ALS |
ΔcH°solid | -2913.49 | kJ/mol | Ccb | Rinkenbach, 1930 | Author hf298_condensed[kcal/mol]=-6.86; ALS |
ΔcH°solid | -2931. | kJ/mol | Ccb | Garner and Abernethy, 1921 | ALS |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
197.5 | 298.15 | Ueberreiter and Orthmann, 1950 | T = 293 to 368 K. Equation only.; DH |
180.3 | 298. | Andrews, Lynn, et al., 1926 | T = 22 to 245°C.; DH |
188.3 | 297.9 | Andrews, 1926 | T = 110 to 332 K. Value is unsmoothed experimental datum.; DH |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, 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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
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 |
---|---|---|---|---|---|
Tboil | 570.2 | K | N/A | Aldrich Chemical Company Inc., 1990 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 363. ± 2. | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 87.0 ± 0.8 | kJ/mol | TE | Ferro, Piacente, et al., 1976 | Based on data from 332. to 383. K.; AC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
96.7 | 351. | A | Stephenson and Malanowski, 1987 | Based on data from 336. to 379. K.; AC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
76.1 | 345.5 | N/A | Stephenson and Malanowski, 1987 | Based on data from 335. to 356. K.; AC |
83. ± 2. | 323. | V | Wolf and Weghofer, 1938 | ALS |
81.1 ± 1.7 | 323. | N/A | Trieschmann, 1935 | Based on data from 315. to 329. K. See also Wolf and Weghofer, 1938, 2 and Jones, 1960.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
19.68 | 360.4 | Musuc, Razus, et al., 2002 | AC |
17.36 | 363.2 | Acree, 1991 | AC |
17.350 | 363.23 | Booss and Hauschildt, 1972 | DH |
17.360 | 363.2 | Andrews, Lynn, et al., 1926 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
47.8 | 363.23 | Booss and Hauschildt, 1972 | DH |
47.8 | 363.2 | Andrews, Lynn, et al., 1926 | DH |
Reaction thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Ion clustering data, 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: Br- + C6H4N2O4 = (Br- • C6H4N2O4)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 84.9 ± 7.5 | kJ/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff at 423 K, ΔSaff taken as that of mCF3-nitrobenzene..Br-; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 45.6 ± 4.2 | kJ/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff at 423 K, ΔSaff taken as that of mCF3-nitrobenzene..Br-; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
45.6 | 423. | PHPMS | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
By formula: NO2- + C6H4N2O4 = (NO2- • C6H4N2O4)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 88.7 ± 8.4 | kJ/mol | TDAs | Grimsrud, Chowdhury, et al., 1986 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94.6 | J/mol*K | PHPMS | Grimsrud, Chowdhury, et al., 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 60.2 ± 8.4 | kJ/mol | TDAs | Grimsrud, Chowdhury, et al., 1986 | gas phase; B |
Gas phase ion energetics data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Ion clustering data, 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 evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.4 | eV | N/A | N/A | L |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
1.66 ± 0.10 | IMRE | Chowdhury, Heinis, et al., 1986 | ΔGea(423 K) = -36.9 kcal/mol; ΔSea (estimated) = -3.2 eu.; B |
0.067996 | N/A | Desfrancois, Periquet, et al., 1999 | dipole bound state; B |
<1.650 ± 0.050 | PD | Mock and Grimsrud, 1989 | B |
1.652 ± 0.048 | IMRE | Fukuda and McIver, 1985 | ΔGea(355 K) = -37.0 kcal/mol; ΔSea =-3.2, est. from data in Chowdhury, Heinis, et al., 1986; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.43 ± 0.02 | PI | Kotov and Potapov, 1972 | LLK |
10.6 ± 0.1 | EI | Brown, 1970 | RDSH |
10.40 | PE | Palmer, Moyes, et al., 1979 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H4NO2+ | 12.3 ± 0.1 | NO2 | EI | Brown, 1970 | RDSH |
Ion clustering data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, 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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: Br- + C6H4N2O4 = (Br- • C6H4N2O4)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 84.9 ± 7.5 | kJ/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff at 423 K, ΔSaff taken as that of mCF3-nitrobenzene..Br-; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 45.6 ± 4.2 | kJ/mol | IMRE | Paul and Kebarle, 1991 | gas phase; ΔGaff at 423 K, ΔSaff taken as that of mCF3-nitrobenzene..Br-; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
45.6 | 423. | PHPMS | Paul and Kebarle, 1991 | gas phase; Entropy change calculated or estimated; M |
By formula: NO2- + C6H4N2O4 = (NO2- • C6H4N2O4)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 88.7 ± 8.4 | kJ/mol | TDAs | Grimsrud, Chowdhury, et al., 1986 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 94.6 | J/mol*K | PHPMS | Grimsrud, Chowdhury, et al., 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 60.2 ± 8.4 | kJ/mol | TDAs | Grimsrud, Chowdhury, et al., 1986 | gas phase; B |
Gas Chromatography
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | SE-30 | 150. | 1400. | Tiess, 1984 | Ar, Gas Chrom Q (80-100 mesh); Column length: 3. m |
Lee's RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5MS | 247.64 | Chen, Keeran, et al., 2002 | 30. m/0.25 mm/0.5 μm, 40. C @ 1. min, 10. K/min; Tend: 310. C |
Capillary | DB-5MS | 247.45 | Chen, Keeran, et al., 2002 | 30. m/0.25 mm/0.5 μm, 40. C @ 1. min, 10. K/min; Tend: 310. C |
Capillary | DB-5MS | 248.35 | Chen, Keeran, et al., 2002 | 30. m/0.25 mm/0.5 μm, 40. C @ 1. min, 4. K/min; Tend: 310. C |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Swarts, 1914
Swarts, F.,
Sur la chaleur de combustion de quelques derives nitres aromatlques,
Recl. Trav. Chim. Pays-Bas, 1914, 33, 281-298. [all data]
Lebedeva, Ryadnenko, et al., 1971
Lebedeva, N.D.; Ryadnenko, V.L.; Kuznetsova, I.N.,
Heats of combustion and enthalpies of formation of certain aromatic nitro-derivatives,
Russ. J. Phys. Chem. (Engl. Transl.), 1971, 45, 549. [all data]
Lebedeva, Rjadnenko, et al., 1969
Lebedeva, N.D.; Rjadnenko, B.L.; Gutner, N.M.,
Heats of formation of some N-containing organic compounds,
Int. Conf. Calorim. Therm. (Warsaw, Poland), 1969, 1-8. [all data]
Rinkenbach, 1930
Rinkenbach, W.H.,
The heats of combustion and formation of aromatic nitro compounds,
J. Am. Chem. Soc., 1930, 52, 115-120. [all data]
Badoche, 1939
Badoche, M.M.,
Determinations des chaleurs de combustion de derives nitres de la serie benzenique,
Bull. Soc. Chim. France, 1939, 6, 570-579. [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]
Burlot, 1939
Burlot, E.,
Etude relative a la calorimetrie des explosifs,
Mem. Poudres, 1939, 29, 226-260. [all data]
Garner and Abernethy, 1921
Garner, W.E.; Abernethy, C.L.,
Heats of combustion and formation of nitro-compounds. Part I. - Benzene, toluene, phenol and methylaniline series,
Proc. Roy. Soc. London A, 1921, 213-235. [all data]
Ueberreiter and Orthmann, 1950
Ueberreiter, K.; Orthmann, H.-J.,
Specifische Wärme, spezifisches Volumen, Temperatur- und Wärme-leittähigkeit einiger disubstituierter Benzole und polycyclischer Systeme,
Z. Natursforsch. 5a, 1950, 101-108. [all data]
Andrews, Lynn, et al., 1926
Andrews, D.H.; Lynn, G.; Johnston, J.,
The heat capacities and heat of crystallization of some isomeric aromatic compounds,
J. Am. Chem. Soc., 1926, 48, 1274-1287. [all data]
Andrews, 1926
Andrews, D.H.,
The specific heats of some isomers of the type ortho, meta and para C6H4XY from 110 to 340K,
J. Am. Chem. Soc., 1926, 48, 1287-1298. [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]
Ferro, Piacente, et al., 1976
Ferro, D.; Piacente, V.; Gigli, R.; D'Ascenzo, G.,
Determination of the vapour pressures of o-, m-, and p-dinitrobenzene by the torsion-effusion method,
The Journal of Chemical Thermodynamics, 1976, 8, 12, 1137-1143, https://doi.org/10.1016/0021-9614(76)90120-8
. [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]
Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H.,
Uber sublimationswarmen,
Z. Phys. Chem., 1938, 39, 194-208. [all data]
Trieschmann, 1935
Trieschmann, H.G.,
, Ph.D. Dissertation, Inst. Fur Phys. Chem. and Electrochem. der Universitat Kiel, Germany, 1935. [all data]
Wolf and Weghofer, 1938, 2
Wolf, K.L.; Weghofer, H.Z.,
Z. Phys. Chem. Abt. B, 1938, 39, 194. [all data]
Jones, 1960
Jones, A.H.,
Sublimation Pressure Data for Organic Compounds.,
J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019
. [all data]
Musuc, Razus, et al., 2002
Musuc, A.M.; Razus, D.; Oancea, D.,
Analele Universitatii Bucuresti Chimie, 2002, 11, 2, 147. [all data]
Acree, 1991
Acree, William E.,
Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation,
Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H
. [all data]
Booss and Hauschildt, 1972
Booss, H.J.; Hauschildt, K.R.,
Die Schmelzenthalpie des Benzils und 4-Nitrophenols,
Z. Anal. Chem., 1972, 261(1), 32. [all data]
Paul and Kebarle, 1991
Paul, G.J.C.; Kebarle, P.,
Stabilities of Complexes of Br- with Substituted Benzenes (SB) Based on Determinations of the Gas-Phase Equilibria Br- + SB = (BrSB)-,
J. Am. Chem. Soc., 1991, 113, 4, 1148, https://doi.org/10.1021/ja00004a014
. [all data]
Grimsrud, Chowdhury, et al., 1986
Grimsrud, E.P.; Chowdhury, S.; Kebarle, P.,
Gas Phase Reactions of NO2- with Nitrobenzenes and Quinones. Electron Transfer, Clusters, and Formation of Phenoxide and Quinoxide Negative Ions. Use of NO2 as a NICI Reagent Gas.,
Int. J. Mass Spectrom. Ion Proc., 1986, 68, 1-2, 57, https://doi.org/10.1016/0168-1176(86)87068-9
. [all data]
Chowdhury, Heinis, et al., 1986
Chowdhury, S.; Heinis, T.; Grimsrud, E.P.; Kebarle, P.,
Entropy Changes and Electron Affinities from Gas-Phase Electron Transfer Equilibria: A- + B = A + B-,
J. Phys. Chem., 1986, 90, 12, 2747, https://doi.org/10.1021/j100403a037
. [all data]
Desfrancois, Periquet, et al., 1999
Desfrancois, C.; Periquet, V.; Lyapustina, S.A.; Lippa, T.P.; Robinson, D.W.; Bowen, K.H.; Nonaka, H.; Compton,
Electron Binding to Valence and Multipole states of Molecules: Nitrobenzene, para- and meta-dinitrobenzenes,
J. Chem. Phys., 1999, 111, 10, 4569, https://doi.org/10.1063/1.479218
. [all data]
Mock and Grimsrud, 1989
Mock, R.S.; Grimsrud, E.P.,
Gas-Phase Electron Photodetachment Spectroscopy of the Molecular Anions of Nitroaromatic Hydrocarbons at Atmospheric Pressure,
J. Am. Chem. Soc., 1989, 111, 8, 2861, https://doi.org/10.1021/ja00190a020
. [all data]
Fukuda and McIver, 1985
Fukuda, E.K.; McIver, R.T., Jr.,
Relative electron affinities of substituted benzophenones, nitrobenzenes, and quinones. [Anchored to EA(SO2) from 74CEL/BEN],
J. Am. Chem. Soc., 1985, 107, 2291. [all data]
Kotov and Potapov, 1972
Kotov, B.V.; Potapov, V.K.,
Ionization potentials of strong organic electron acceptors,
Khim. Vys. Energ., 1972, 6, 375. [all data]
Brown, 1970
Brown, P.,
Kinetic studies in mass spectrometry. IX. Competing [M-NO2] and [M-NO] reactions in substituted nitrobenzenes. Approximate activation energies from ionization and appearance potentials,
Org. Mass Spectrom., 1970, 4, 533. [all data]
Palmer, Moyes, et al., 1979
Palmer, M.H.; Moyes, W.; Spiers, M.; Ridyard, J.N.A.,
The electronic structure of substituted benzenes; ab initio calculations and photoelectron spectra for nitrobenzene, the nitrotoluenes, dinitrobenzenes and fluoronitrobenzenes,
J. Mol. Struct., 1979, 55, 243. [all data]
Tiess, 1984
Tiess, D.,
Gaschromatographische Retentionsindices von 125 leicht- bis mittelflüchtigen organischen Substanzen toxikologisch-analytischer Relevanz auf SE-30,
Wiss. Z. Wilhelm-Pieck-Univ. Rostock Math. Naturwiss. Reihe, 1984, 33, 6-9. [all data]
Chen, Keeran, et al., 2002
Chen, P.H.; Keeran, W.S.; Van Ausdale, W.A.; Schindler, D.R.; Roberts, D.W.,
Application of Lee retention indices to the confirmation of tentatively identified compounds from GC/MS analysis of environmental samples, Technical paper, Analytical Services Division, Environmental ScienceEngineering, Inc, PO Box 1703, Gainesville, FL 32602, 2002, 11. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, Gas Chromatography, References
- Symbols used in this document:
AE Appearance energy Cp,solid Constant pressure heat capacity of solid EA Electron affinity IE (evaluated) Recommended ionization energy T Temperature Tboil Boiling point Tfus Fusion (melting) point ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - 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.