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Properties of substance:

α-D-dextrose



skc-file

Synonyms:

α-D-(+)-glucose

Group of substances:

organic

Physical appearance:

crystals

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

C6H12O6

Molar/atomic mass: 180.1559

Melting point (°C):

146

Solubility (g/100 g of solvent):

2-propanol: 0.08 (23°C) [Ref.]
acetone: 0.014 (23°C) [Ref.]
ethanol: 2 (20°C) [Ref.]
ethanol: soluble (78°C) [Ref.]
ethanol abs.: 0.22 (23°C) [Ref.]
glycerol 25%: 86.9 (25°C) [Ref.]
glycerol 50%: 61.6 (25°C) [Ref.]
glycerol 75%: 34.4 (25°C) [Ref.]
glycerol 95%: 16.7 (25°C) [Ref.]
methanol: 1.52 (0°C) [Ref.]
methanol: 2.35 (25°C) [Ref.]
methanol: 5.15 (50°C) [Ref.]
pyridine: 7.62 (25°C) [Ref.]
pyridine 50% aq.: 49.17 (25°C) [Ref.]
trichloroethylene: 0.006 (15°C) [Ref.]
water: 32.3 (0°C) [Ref.]
water: 82 (25°C) [Ref.]
water: 562 (90.8°C) [Ref.]

Properties of solutions:

10% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 1.33 (20°)
  Density (g/cm3) = 1.0375 (20°)
  Index of refraction = 1.3477 (20°)
  Freezing point (°C) = -1.17
60% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 37.445 (20°)
  Density (g/cm3) = 1.2793 (20°)
  Index of refraction = 1.4394 (20°)

Numerical data:

Sweetness potency сompared with a 2% (w/v) aqueous solution of sucrose: 0.7

Density:

1.562 (18°C, g/cm3)

Reactions:

  1. Yeild 100%. [Ref.1, Ref.2]
    HOCH2(CHOH)4CHO + 5H5IO6 → CH2O + 5HCOOH + 5HIO3 + 10H2O

Dissociation:

pKa (1) = 12.2 (23°C, water)

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-1273.3 (s) [Ref.]

References:

  1. Journal of Agricultural and Food Chemistry. - 1953. - Vol. 1, No. 8. - pp. 568
  2. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 445-446
  3. The Merck Index 11th ed., Merck & Company, 1989. - pp. 699-700
  4. Альберт А., Сержент Е. Константы ионизации кислот и оснований. - М.-Л.: Химия, 1964. - pp. 124 [Russian]
  5. Природа. - 1992. - №11. - pp. 71 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 141 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 457 [Russian]
  8. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 632-633 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru