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Camphor

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Phase change data

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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
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
Tboil482.3KN/ALecat, 1947Uncertainty assigned by TRC = 1. K; TRC
Tboil482.25KN/ALecat, 1943Uncertainty assigned by TRC = 0.3 K; TRC
Tboil482.25KN/ALecat, 1943, 2Uncertainty assigned by TRC = 0.5 K; TRC
Quantity Value Units Method Reference Comment
Tfus449.KN/AMjojo, 1979Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC
Tfus451.5KN/AFrandsen, 1931Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Deltavap54.4kJ/molCGCChickos, Hosseini, et al., 1995Based on data from 343. - 383. K.; AC
Deltavap54.5kJ/molCGCChickos, Hosseini, et al., 1995Based on data from 343. - 383. K.; AC
Deltavap55.2kJ/molCGCChickos, Hosseini, et al., 1995Based on data from 343. - 383. K.; AC
Quantity Value Units Method Reference Comment
Deltasub51.9 ± 0.8kJ/molVSteele, 1977ALS

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
451.20 - 505.503.309671096.291-148.579de Wilde, 1937Coefficents calculated by NIST from author's data.

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
51.5 ± 2.6283.HSAChickos, 1975Based on data from 273. - 293. K.; AC
53.6363.N/AJones, 1960Based on data from 273. - 453. K.; AC
54.7301.N/ASherwood and Bryant, 1957Based on data from 285. - 318. K.; AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
6.820451.5Frandsen, 1931, 2DH

Entropy of fusion

DeltafusS (J/mol*K) Temperature (K) Reference Comment
15.10451.5Frandsen, 1931, 2DH

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:


References

Go To: Top, Phase change data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Lecat, 1947
Lecat, M., Orthobaric Azeotropes of Sulfides, Bull. Cl. Sci., Acad. R. Belg., 1947, 33, 160-82. [all data]

Lecat, 1943
Lecat, M., Negative and other Azeotropes, C. R. Hebd. Seances Acad. Sci., 1943, 217, 242. [all data]

Lecat, 1943, 2
Lecat, M., Azeotropes of Ethyl Urethane and other Azeotropes, C. R. Hebd. Seances Acad. Sci., 1943, 217, 273. [all data]

Mjojo, 1979
Mjojo, C.C., Order-disorder phenomena: part 2. order-disorder phase equilibria in d-and l-systems of camphor and related compounds., J. Chem. Soc., Faraday Trans. 2, 1979, 75, 692-703. [all data]

Frandsen, 1931
Frandsen, M., Cryoscopic constant, heat of fusion, and heat capacity of camphor, Bur. Stand. J. Res., 1931, 1931, 7 477. [all data]

Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G., Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times, Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3 . [all data]

Steele, 1977
Steele, W.V., The standard enthalpies of formation of bicyclic compounds. III. 1,7,7-trimethylbicyclo[2.2.1]heptan-2-one, J. Chem. Thermodyn., 1977, 9, 311-314. [all data]

de Wilde, 1937
de Wilde, J.H., «65533»ber die Dampfdrucke des Kampfers, Z. Anorg. Allg. Chem., 1937, 233, 4, 411-414, https://doi.org/10.1002/zaac.19372330408 . [all data]

Chickos, 1975
Chickos, James Speros, A simple equilibrium method for determining heats of sublimation, J. Chem. Educ., 1975, 52, 2, 134-39, https://doi.org/10.1021/ed052p134 . [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]

Sherwood and Bryant, 1957
Sherwood, T.K.; Bryant, J.H., Jr., Can. J. Chem. Eng., 1957, 35, 51. [all data]

Frandsen, 1931, 2
Frandsen, M., Cryoscopic constant, heat of fusion, and heat capacity of camphor, Bur. Stand. J. Res., 1931, 7, 477-483. [all data]


Notes

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