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Properties of substance:

2-furancarboxylic acid

Synonyms:

furan-2-carboxylic acid
pyromucic acid

Group of substances:

organic

Physical appearance:

colorless monoclinic crystals

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

C5H4O3

Structural formula as text:

C4H3OCOOH

Molar/atomic mass: 112.09

Melting point (°C):

133

Sublimation point (°C):

230

Solubility (g/100 g of solvent):

diethyl ether: very soluble [Ref.]
ethanol: soluble [Ref.]
water: 2.496 (5.99°C) [Ref.]
water: 3.57 (15°C) [Ref.]
water: 3.794 (20.99°C) [Ref.]
water: 29.26 (51.99°C) [Ref.]
water: 61.97 (67.99°C) [Ref.]

Dissociation:

pKa (1) = 3.16 (25°C, water)

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

-498.4 (s)

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

-390 (g)

References:

  1. Dictionary of organic compounds. - Vol. 3, naphthacarbazole - zygadenine. - М.: ИИЛ, 1949. - pp. 559
  2. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 141
  3. Альберт А., Сержент Е. Константы ионизации кислот и оснований. - М.-Л.: Химия, 1964. - pp. 122 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 892-893 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru