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Properties of substance:

benzenehexacarboxylic acid



skc-file

Synonyms:

mellitic acid

Physical appearance:

colorless needles crystals

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

C12H6O12

Structural formula as text:

C6(COOH)6

CAS No: 517-60-2

Molar/atomic mass: 342.169

Melting point (°C):

286

Solubility (g/100 g of solvent):

benzene: insoluble [Ref.]
water: 89.4 (20°C) [Ref.]
water: 97.2 (49.3°C) [Ref.]
1,4-dioxane: 5 (20°C) [Ref.]
diethyl ether: 0.86 (20°C) [Ref.]
methanol: 29.4 (20°C) [Ref.]
pyridine: 0.4 (20°C) [Ref.]
carbon disulphide: insoluble [Ref.]
carbon tetrachloride: insoluble [Ref.]
chloroform: insoluble [Ref.]
ethanol: 85.2 (20°C) [Ref.]

    Dissociation:

    pKa (1) = 1.4 (25°C, water)
    pKa (2) = 2.19 (25°C, water)
    pKa (3) = 3.31 (25°C, water)
    pKa (4) = 4.78 (25°C, water)
    pKa (5) = 5.89 (25°C, water)
    pKa (6) = 6.96 (25°C, water)

    LD50 (mg/kg):

    1025 (, )

    References:

    1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 3-34
    2. Dictionary of organic compounds. - Vol. 2, Eccaine - Myrtillin chloride. - London, 1946. - pp. 545-546
    3. Каррер П. Курс органической химии. - Л.: ГНТИХЛ, 1960. - pp. 656
    4. Справочник химика. - Т.2. - Л.-М.: Химия, 1964. - pp. 776-777
    5. Справочник химика. - Т.3. - М.-Л.: Химия, 1965. - pp. 90
    6. Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 400
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru