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Properties of substance:

vanillic acid

Group of substances:

organic

Physical appearance:

colorless needles crystals

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

C8H8O4

Structural formula as text:

CH3OC6H3(OH)COOH

Molar/atomic mass: 168.147

Melting point (°C):

214

CAS №: 121-34-6

Solubility (g/100 g of solvent):

diethyl ether: soluble [Ref.]
ethanol: very soluble [Ref.]
water: 0.15 (14°C) [Ref.]
water: 2.6 (100°C) [Ref.]

Dissociation:

pKa (1) = 4.52 (25°C, water)

References:

  1. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 1.240
  2. Journal of Physical and Chemical Reference Data. - 2013. - Vol. 42, No. 3. - pp. 033103-408 - 033103-409
  3. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 482
  4. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 487
  5. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 50-51 [Russian]
  6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 570-571 [Russian]
  7. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 86 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru