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Properties of substance:

pentane



skc-file

Synonyms:

n-pentane

Group of substances:

organic

Physical appearance:

colorless liquid

Empirical formula (Hill's system for organic substances):

C5H12

Structural formula as text:

CH3(CH2)3CH3

CAS No: 109-66-0

Molar/atomic mass: 72.149

Melting point (°C):

-129.721

Boiling point (°C):

36.074

Solubility (g/100 g of solvent):

acetone: miscible [Ref.]
benzene: miscible [Ref.]
chloroform: miscible [Ref.]
diethyl ether: miscible [Ref.]
ethanol: miscible [Ref.]
hydrogen fluoride : slightly soluble [Ref.]
methanol: 76.5 (5°C) [Ref.]
methanol: 101 (10°C) [Ref.]
methanol: miscible (14.25°C) [Ref.]
water: 0.00385 (25°C) [Ref.]
water: 0.00694 (99.1°C) [Ref.]

Density:

0.6455 (0°C, g/cm3)
0.636 (10°C, g/cm3)
0.62624 (20°C, g/cm3)
0.62139 (25°C, g/cm3)
0.6163 (30°C, g/cm3)

Refractive index (nD):

1.3575 (20°C)

Vapour pressure (Torr):

1 (-76°C)
10 (-50.1°C)
40 (-29.3°C)
100 (-12.6°C)
400 (18.5°C)
442 (21°C)

    Permittivity (dielectric constant):

    1.844 (20°C)

    Viscosity (mPa·s):

    0.24 (20°C)
    0.2152 (25°C)

    Surface tension (mN/m):

    15 (30°C)

    Speed sound (m/s):

    220 (134°C, aggregative state - gas)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -173.5 (l)

    Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

    167.2 (l)

    Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

    8.42

    Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

    26.43

    Flash point (°C):

    -40

    Heat of combustion (kJ/mol):

    3486.9

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -146.9 (g)

    Critical temperature (°C):

    196.9

    Critical pressure (MPa):

    3.35

    Critical density (g/cm3):

    0.232

    References:

    1. Journal of Chemical and Engineering Data. - 1961. - Vol. 6, No. 3. - pp. 339
    2. Smallwood I.M. Handbook of organic solvent properties. - 1996. - pp. 3-5
    3. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 177-178
    4. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 176
    5. Воскресенский П.И., Каверина А.А., Парменов К.Я., Цветков Л.А., Эпштейн Д.А. Справочник по химии. - 4 изд. - М.: Просвещение, 1978. - pp. 200 [Russian]
    6. Вредные химические вещества: Углеводороды, галогенпроизводные углеводородов. Справочник. - Л.: Химия, 1990. - pp. 27-29 [Russian]
    7. Краткий справочник физико-химических величин. - Под ред. Мищенко К.П., Равделя А.А. - Л.: Химия, 1974. - pp. 105 [Russian]
    8. Промышленные хлорорганические продукты: Справочник. - М.: Химия, 1978. - pp. 617-619 [Russian]
    9. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 171 [Russian]
    10. Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 632 [Russian]
    11. Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 460 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru