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Properties of substance:

methylmalonic acid

Synonyms:

methylpropanedioic acid

Group of substances:

organic

Physical appearance:

colorless prismatic crystals

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

C4H6O4

Structural formula as text:

CH3CH(COOH)2

Molar/atomic mass: 118.088

Melting point (°C):

129

Solubility (g/100 g of solvent):

benzene: 0.003 (25°C) [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
ethyl acetate: soluble [Ref.]
water: 58.5 (15°C) [Ref.]
water: 67.9 (25°C) [Ref.]

Dissociation:

pKa (1) = 3.07 (25°C, water)
pKa (2) = 5.87 (20°C, water)

References:

  1. Dictionary of Organic Compounds. - 5 ed., 8 supplement - Springer Science + Business Media B.V., 1990. - pp. 298
  2. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 167, 231
  3. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 96
  4. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 394 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 698-699 [Russian]
  6. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 90 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru