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Properties of substance:

pimelic acid


heptanedioic acid;


skc-file

Physical appearance:

monoclinic crystals

Empirical formula (Hill's system):

C7H12O4

Structural formula:

HOOC(CH2)5COOH

Molar/atomic mass: 160.168

Melting point (°C):

105.5

Destruction point (°C):

300

Solubility (g/100 g of solvent):

benzene: 0.0199 (25°C) [Ref.]
water: 1.786 (5.99°C) [Ref.]
water: 1.844 (7.99°C) [Ref.]
water: 5 (20°C) [Ref.]
water: 6.307 (24.99°C) [Ref.]
water: 8.124 (30.99°C) [Ref.]
water: 14.23 (39.99°C) [Ref.]
water: 74.46 (68.99°C) [Ref.]
diethyl ether: very soluble [Ref.]
ethanol: very soluble [Ref.]

Density:

1.329 (15°C, d4)

Vapour pressure (Torr):

10 (212°C)
100 (272°C)

    Dissociation:

    pKa (1) = 4.51 (25°C, water)
    pKa (2) = 5.31 (25°C, water)

    Dipole moment (D):

    2.36 (20°C)

    Heat of combustion (kJ/mol)

    3470,6 (s)

    References:

    1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-274
    2. Dictionary of organic compounds. - Vol. 3, naphthacarbazole - zygadenine. - М.: ИИЛ, 1949. - pp. 492
    3. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 561
    4. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 417
    5. Краткая химическая энциклопедия. - Т. 3: Мальтаза-Пиролиз. - М.: Советская энциклопедия, 1964. - pp. 1034
    6. Методы синтеза алифатических дикарбоновых кислот. - Ч. 1. - М.: НИИТЭИ, 1971. - pp. 6
    7. Мономеры для поликонденсации. - М.: Мир, 1976. - pp. 54-57
    8. Справочник химика. - Т.2. - Л.-М.: Химия, 1964. - pp. 878-879
    9. Справочник химика. - Т.3. - М.-Л.: Химия, 1965. - pp. 92
    10. Фрейдлин Г.Н. Алифатические дикарбоновые кислоты. - М., 1978. - pp. 10, 15, 128-135
    11. Химическая энциклопедия. - Т.2. - М.: Советская энциклопедия, 1990. - pp. 58
    12. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советсткая энциклопедия, 1983. - pp. 438
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru