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Properties of substance:

D-(-)-tartatic acid

Group of substances:

organic

Physical appearance:

colorless monoclinic crystals

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

C4H6O6

Structural formula as text:

HOOCCH(OH)CH(OH)COOH

Molar/atomic mass: 150.09

Melting point (°C):

170

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
diethyl ether: 0.55 (15°C) [Ref.]
ethanol: 32.4 (16°C) [Ref.]
glycerol: soluble [Ref.]
methanol: 59 (20°C) [Ref.]
water: 139 (20°C) [Ref.]
water: 343 (100°C) [Ref.]

Numerical data:

Year of discovery: 1769

Density:

1.7598 (20°C, d4)

Reactions:

  1. Yeild 100%. [Ref.1]
    HOOCCH(OH)CH(OH)COOH + H5IO6 → 2HOOCCHO + HIO3 + 3H2O

Dissociation:

pKa (1) = 2.98 (25°C, water)
pKa (2) = 4.34 (25°C, water)

Enthalpy (heat) of solution ΔsolH (kJ)

13.7 (s) [Ref.]

References:

  1. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 1.312
  2. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 100-101
  3. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 395 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 572-573 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru