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Properties of substance:

glyoxylic acid

Group of substances:

organic

Physical appearance:

colorless prismatic crystals

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

C2H4O4

Structural formula as text:

(HO)2CHCOOH

Molar/atomic mass: 92.06

Melting point (°C):

98

Solubility (g/100 g of solvent):

benzene: sparingly soluble [Ref.]
diethyl ether: difficulty soluble [Ref.]
ethanol: difficulty soluble [Ref.]
water: very soluble [Ref.]

Reactions of synthesis:

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

Dissociation:

pKa (1) = 3.3 (25°C, water)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-286
  2. Краткая химическая энциклопедия. - Т. 1: А-Е. - М.: Советская энциклопедия, 1961. - pp. 969-970 [Russian]
  3. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 622-623 [Russian]
  4. Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 228 [Russian]
  5. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 110 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru