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Properties of substance:

benzenehexacarboxylic acid



skc-file

Synonyms:

mellitic acid

Group of substances:

organic

Physical appearance:

colorless needles crystals

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

C12H6O12

Structural formula as text:

C6(COOH)6

Molar/atomic mass: 342.169

Melting point (°C):

286

CAS №: 517-60-2

Solubility (g/100 g of solvent):

1,4-dioxane: 5 (20°C) [Ref.]
benzene: insoluble [Ref.]
carbon disulphide: insoluble [Ref.]
carbon tetrachloride: insoluble [Ref.]
chloroform: insoluble [Ref.]
diethyl ether: 0.86 (20°C) [Ref.]
ethanol: 85.2 (20°C) [Ref.]
methanol: 29.4 (20°C) [Ref.]
pyridine: 0.4 (20°C) [Ref.]
water: 89.4 (20°C) [Ref.]
water: 97.2 (49.3°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 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 776-777 [Russian]
  5. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 90 [Russian]
  6. Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 400 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru