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Properties of substance:

oxalic acid dihydrate

Group of substances:

organic

Physical appearance:

colorless monoclinic crystals

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

C2H6O6

Structural formula as text:

(COOH)2 * 2H2O

Molar/atomic mass: 126.065

Melting point (°C):

101.5

Solubility (g/100 g of solvent):

benzene: insoluble [Ref.]
chloroform: insoluble [Ref.]
diethyl ether: 1.37 (15°C) [Ref.]
diethyl ether: 1.47 (25°C) [Ref.]
ethanol: 30 (15°C) [Ref.]
nickel tetracarbonyl: insoluble [Ref.]
petroleum ether: insoluble [Ref.]
water: 9.5 (15°C) [Ref.]
water: 0.182 (23°C) [Ref.]
water: 120 (90°C) [Ref.]

Reactions:

  1. [Ref.1aster, Ref.2aster]
    K2Cr2O7 + 7H2C2O4 + 2K2C2O4 → 2K3[Cr(C2O4)3]*3H2O + 6CO2 + H2O

References:

  1. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 25
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 196 [Russian]
  3. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 402 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru