Naphthalene, decahydro-, trans-
- Formula: C10H18
- Molecular weight: 138.2499
- IUPAC Standard InChIKey: NNBZCPXTIHJBJL-MGCOHNPYSA-N
- CAS Registry Number: 493-02-7
- 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. - Stereoisomers:
- Other names: trans-Bicyclo[4.4.0]Decane; trans-Decahydronaphthalene; trans-Decalin; trans-Perhydronaphthalene; Decahydronaphthalene, trans-; Decahydronaphthalene, (E)-; (E)-Decahydronaphthalene; t-Decalin; Bicyclo[4.4.0]decane, isomer # 1; trans-Decaline
- 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.
Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics 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 as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -43.54 ± 0.55 | kcal/mol | Ccb | Speros and Rossini, 1960 | ALS |
ΔfH°gas | -43.07 | kcal/mol | N/A | Davies and Gilbert, 1941 | Value computed using ΔfHliquid° value of -228.7±1.3 kj/mol from Davies and Gilbert, 1941 and ΔvapH° value of 48.5 kj/mol from Speros and Rossini, 1960.; DRB |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.362 | 50. | Dorofeeva O.V., 1988 | Recommended values agree with results of statistical calculations [ Miyazawa T., 1958, Chang S., 1970] within their uncertainties. These functions are also reproduced in the reference book [ Frenkel M., 1994].; GT |
14.24 | 100. | ||
20.03 | 150. | ||
26.095 | 200. | ||
36.405 | 273.15 | ||
40.29 ± 0.24 | 298.15 | ||
40.578 | 300. | ||
56.494 | 400. | ||
71.066 | 500. | ||
83.461 | 600. | ||
93.860 | 700. | ||
102.61 | 800. | ||
110.03 | 900. | ||
116.33 | 1000. | ||
121.72 | 1100. | ||
126.32 | 1200. | ||
130.28 | 1300. | ||
133.68 | 1400. | ||
136.63 | 1500. |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
56.771 | 400. | Miyazawa T., 1958 | GT |
65.079 | 450. |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics 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 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 | -55.14 ± 0.22 | kcal/mol | Ccb | Speros and Rossini, 1960 | ALS |
ΔfH°liquid | -54.65 ± 0.32 | kcal/mol | Ccb | Davies and Gilbert, 1941 | Reanalyzed by Cox and Pilcher, 1970, Original value = -54.87 kcal/mol; ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -1500.23 ± 0.22 | kcal/mol | Ccb | Speros and Rossini, 1960 | Corresponding ΔfHºliquid = -55.12 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -1500.70 ± 0.30 | kcal/mol | Ccb | Davies and Gilbert, 1941 | Reanalyzed by Cox and Pilcher, 1970, Original value = -1500.3 ± 0.1 kcal/mol; Corresponding ΔfHºliquid = -54.65 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -1497.1 ± 0.5 | kcal/mol | Ccb | Huckel, Kamenz, et al., 1937 | Corresponding ΔfHºliquid = -58.2 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -1495.2 | kcal/mol | Ccb | Huckel and Mentzel, 1926 | Corresponding ΔfHºliquid = -60.1 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -1498.1 ± 1.1 | kcal/mol | Ccb | Roth and Lasse, 1925 | Corresponding ΔfHºliquid = -57.21 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 63.320 | cal/mol*K | N/A | McCullough, Finke, et al., 1957 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
54.773 | 298.15 | Ohnishi, Fujihara, et al., 1989 | DH |
54.773 | 298.15 | Shiohama, Ogawa, et al., 1988 | DH |
54.773 | 298.15 | Shiohama, Ogawa, et al., 1988, 2 | DH |
59.89 | 313. | Gudinowicz, Campbell, et al., 1963 | T = 313 to 423 K.; DH |
54.610 | 298.15 | McCullough, Finke, et al., 1957 | T = 10 to 350 K.; DH |
54.221 | 298. | Seyer, 1953 | T = 293 to 413 K.; DH |
52.036 | 298.15 | Parks and Hatton, 1949 | T = 80 to 298.15 K.; DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics 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 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
DRB - Donald R. Burgess, Jr.
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 460. ± 3. | K | AVG | N/A | Average of 17 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 242. ± 2. | K | AVG | N/A | Average of 15 out of 16 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 242.7700 | K | N/A | McCullough, Finke, et al., 1957, 2 | Uncertainty assigned by TRC = 0.07 K; TRC |
Ttriple | 242.7700 | K | N/A | McCullough, Finke, et al., 1957, 2 | Uncertainty assigned by TRC = 0.05 K; TRC |
Ttriple | 242.4 | K | N/A | Parks and Hatton, 1949, 2 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 687. ± 3. | K | N/A | Daubert, 1996 | |
Tc | 960.15 | K | N/A | Cheng, McCoubrey, et al., 1962 | Uncertainty assigned by TRC = 1.3 K; extrapolated to zero time to correct for decomposition cal. vs NPL thermometer; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 11.60 ± 0.50 | kcal/mol | V | Speros and Rossini, 1960 | ALS |
ΔvapH° | 11.6 | kcal/mol | N/A | Speros and Rossini, 1960 | DRB |
ΔvapH° | 10.24 | kcal/mol | C | Glaser and Ruland, 1957 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 15.4 | kcal/mol | H | Bondi, 1963 | See also Chickos, Hosseini, et al., 1993.; AC |
Reduced pressure boiling point
Tboil (K) | Pressure (atm) | Reference | Comment |
---|---|---|---|
458.2 | 0.995 | Aldrich Chemical Company Inc., 1990 | BS |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
10.6 | 378. | A,GS | Stephenson and Malanowski, 1987 | Based on data from 363. to 461. K. See also Camin and Rossini, 1955.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
365.51 to 461.02 | 3.98733 | 1572.899 | -65.947 | Camin and Rossini, 1955 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
15.8 | 241. | B | Bondi, 1963 | AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.7753 | 242.4 | Parks and Hatton, 1949 | DH |
2.27 | 230.2 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
3.20 | 242.4 | Parks and Hatton, 1949 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.36 | 216.1 | Domalski and Hearing, 1996 | CAL |
9.852 | 230.2 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.51040 | 216.1 | crystaline, II | crystaline, I | McCullough, Finke, et al., 1957 | DH |
2.268 | 230.18 | crystaline, I | liquid | McCullough, Finke, et al., 1957 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
2.36 | 216.1 | crystaline, II | crystaline, I | McCullough, Finke, et al., 1957 | DH |
9.852 | 230.18 | crystaline, I | liquid | McCullough, Finke, et al., 1957 | DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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: C10H18 = C10H18
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -2.69 | kcal/mol | Eqk | Nuzzi, 1984 | liquid phase; GC |
ΔrH° | -3.19 | kcal/mol | Eqk | Nuzzi, 1984 | gas phase; GC |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry 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 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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.32 ± 0.05 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.32 ± 0.05 | PI | Mikaya and Zaikin, 1980 | LLK |
9.383 ± 0.005 | EI | Mikaya and Zaikin, 1980 | LLK |
9.35 | PE | Dewar and Worley, 1969 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H10+ | 11.29 ± 0.02 | ? | EI | Natalis, 1962 | RDSH |
C7H12+ | 11.04 ± 0.02 | C3H6 | EI | Natalis, 1962 | RDSH |
IR Spectrum
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, References, Notes
Data compiled by: Coblentz Society, Inc.
- LIQUID (NEAT); DOW KBr FOREPRISM-GRATING; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
- SOLUTION; CARY 90 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 2 cm-1 resolution
- SOLUTION (10% IN CCl4 FOR 3800-1335 AND 10% IN CS2 FOR 1335-470 CM-1) VS. SOLVENT; DOW KBr FOREPRISM-GRATING; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Speros and Rossini, 1960
Speros, D.M.; Rossini, F.D.,
Heats of combustion and formation of naphthalene, the two methylnaphthalenes, cis and trans decahydronaphthalene and related compounds,
J. Phys. Chem., 1960, 64, 1723-1727. [all data]
Davies and Gilbert, 1941
Davies, G.F.; Gilbert, E.C.,
The heat of combustion of cis- and trans-decahydronaphthalene,
J. Am. Chem. Soc., 1941, 63, 1585-1586. [all data]
Dorofeeva O.V., 1988
Dorofeeva O.V.,
Thermodynamic Properties of Polycyclic Aromatic Hydrocarbons in the Gaseous Phase. Institute for High Temperatures, USSR Academy of Sciences, Preprint No.1-238 (in Russian), Moscow, 1988. [all data]
Miyazawa T., 1958
Miyazawa T.,
Thermodynamic functions for gaseous cis- and trans-decalins from 298 to 1000 K,
J. Am. Chem. Soc., 1958, 80, 60-62. [all data]
Chang S., 1970
Chang S.,
The heats of combustion and strain energies of bicyclo[n.m.0]alkanes,
J. Am. Chem. Soc., 1970, 92, 3109-3118. [all data]
Frenkel M., 1994
Frenkel M.,
Thermodynamics of Organic Compounds in the Gas State, Vol. I, II, Thermodynamics Research Center, College Station, Texas, 1994, 1994. [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]
Huckel, Kamenz, et al., 1937
Huckel, W.; Kamenz, E.; Gross, A.; Tappe, W.,
Zur kenntnis der waldenschen umkehrung,
Ann. Chim., 1937, 533, 1-45. [all data]
Huckel and Mentzel, 1926
Huckel, W.; Mentzel, R.,
Zur Stereochemie bicyclischer Ringsteme II. Die Stereoisomerie des Dekahydronaphtalins und seiner Derivate II. Stereoisomere β-substituierte Dekaline,
Ann., 1926, 451, 109-132. [all data]
Roth and Lasse, 1925
Roth, W.A.; Lasse, R.,
Verbrennungswarme der Dekahydro-naphthaline und der Dekalone,
Ann., 1925, 441, 48-53. [all data]
McCullough, Finke, et al., 1957
McCullough, J.P.; Finke, H.L.; Messerly, J.F.; Kincheloe, T.C.; Waddington, G.,
The low temperature thermodynamic properties of naphthalene, 1-methylnaphthalene, 2-methylnaphthalene, 1,2,3,4-tetrahydronaphthalene, trans-decahydronaphthalene and cis-decahydronaphthalene,
J. Phys. Chem., 1957, 61, 1105-1116. [all data]
Ohnishi, Fujihara, et al., 1989
Ohnishi, K.; Fujihara, I.; Murakami, S.,
Thermodynamic properties of decalins mixed with hexane isomers at 298.15K. 1. Excess enthalpies and excess isobaric heat capacities,
Fluid Phase Equilib., 1989, 46, 59-72. [all data]
Shiohama, Ogawa, et al., 1988
Shiohama, Y.; Ogawa, H.; Murakami, S.; Fujihara, I.,
Excess molar isobaric heat capacities and isentropic compressibilities of (cis- or trans-decalin + benzene or toluene or iso-octane or n-heptane) at 298.15 K,
J. Chem. Thermodynam., 1988, 20, 1183-1189. [all data]
Shiohama, Ogawa, et al., 1988, 2
Shiohama, Y.; Ogawa, H.; Murakami, S.; Fujihara, I.,
Excess thermodynamic properties of (cis-decalin or trans-decalin + cyclohexane or methylcyclohexane or cyclooctane) at 298.15 K,
J. Chem. Thermodynam., 1988, 20, 1307-1314. [all data]
Gudinowicz, Campbell, et al., 1963
Gudinowicz, B.J.; Campbell, R.H.; Adams, J.S.,
Specific heat measurements of complex saturated hydrocarbons,
J. Chem. Eng. Data, 1963, 8, 201-214. [all data]
Seyer, 1953
Seyer, W.F.,
The heat capacity of cis- and trans-decahydronaphthalene and the possible existence of a lambda-region for the cis form at 50.1-50.5,
J. Am. Chem. Soc., 1953, 75, 616-621. [all data]
Parks and Hatton, 1949
Parks, G.S.; Hatton, J.A.,
Thermal data on organic compounds. XXIV. The heat capacities, entropies and free energies of cis- and trans-decahydronaphthalene,
J. Am. Chem. Soc., 1949, 71, 2773-2775. [all data]
McCullough, Finke, et al., 1957, 2
McCullough, J.P.; Finke, H.L.; Messerly, J.F.; Todd, S.S.; Kincheloe, T.C.; Waddington, G.,
The Low-Temperature Thermodynamic Properties of Naphthalene, 1-Methylnaphthalene, 2-Methylnaphthalene, 1,2,3,4-tetrahydro- naphthalene, trans-decahydronaphthalene and cis-Decahydronaphthalene,
J. Phys. Chem., 1957, 61, 1105. [all data]
Parks and Hatton, 1949, 2
Parks, G.S.; Hatton, J.A.,
Thermal Data on Organic Compounds. XXIV. The Heat Capacities, Entropies and Free Energies of cis- and trans-Decahydronapthalene,
J. Am. Chem. Soc., 1949, 71, 2773-5. [all data]
Daubert, 1996
Daubert, T.E.,
Vapor-Liquid Critical Properties of Elements and Compounds. 5. Branched Alkanes and Cycloalkanes,
J. Chem. Eng. Data, 1996, 41, 365-372. [all data]
Cheng, McCoubrey, et al., 1962
Cheng, D.C.H.; McCoubrey, J.C.; Phillips, D.G.,
Critical Temperatures of Some Organic Cyclic Compounds,
Trans. Faraday Soc., 1962, 58, 224. [all data]
Glaser and Ruland, 1957
Glaser, F.; Ruland, H.,
Untersuchungsen über dampfdruckkurven und kritische daten einiger technisch wichtiger organischer substanzen,
Chem. Ing. Techn., 1957, 29, 772. [all data]
Bondi, 1963
Bondi, A.,
Heat of Siblimation of Molecular Crystals: A Catalog of Molecular Structure Increments.,
J. Chem. Eng. Data, 1963, 8, 3, 371-381, https://doi.org/10.1021/je60018a027
. [all data]
Chickos, Hosseini, et al., 1993
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G.; Liebman, Joel F.,
Heat capacity corrections to a standard state: a comparison of new and some literature methods for organic liquids and solids,
Struct Chem, 1993, 4, 4, 271-278, https://doi.org/10.1007/BF00673701
. [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]
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]
Camin and Rossini, 1955
Camin, David L.; Rossini, Frederick D.,
Physical Properties of Fourteen API Research Hydrocarbons, C 9 to C 15,
J. Phys. Chem., 1955, 59, 11, 1173-1179, https://doi.org/10.1021/j150533a014
. [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]
Nuzzi, 1984
Nuzzi, M.,
cis-Decalin = trans-decalin reaction. Experimental equilibrium constants and thermodynamic functions of its liquid isomers,
Riv. Combust, 1984, 38, 293-297. [all data]
Mikaya and Zaikin, 1980
Mikaya, A.I.; Zaikin, V.G.,
Determination of the difference in enthalpies of formation of the cis- and trans-isomers of bicyclo[4.3.0]nonane and bicyclo[4.4.0]decane using appearance potentials,
Izv. Akad. Nauk SSSR, Ser. Khim., 1980, 6, 1286. [all data]
Dewar and Worley, 1969
Dewar, M.J.S.; Worley, S.D.,
Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation,
J. Chem. Phys., 1969, 50, 654. [all data]
Natalis, 1962
Natalis, P.,
Note sur le comportement des isomeres cis et trans de la decaline soumis a l'impact electronique,
Bull. Soc. Roy. Sci. Liege, 1962, 31, 803. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, References
- Symbols used in this document:
AE Appearance energy Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid IE (evaluated) Recommended ionization energy S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization 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.