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Properties of substance:

l-glutamic acid



skc-file

Group of substances:

organic

Physical appearance:

colorless tetragonal crystals

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

C5H9NO4

Structural formula as text:

HOOCCH2CH2CH(NH2)COOH

Molar/atomic mass: 147.13

Melting point (°C):

248

Solubility (g/100 g of solvent):

diethyl ether: insoluble [Ref.]
methanol: 0.007 (25°C) [Ref.]
water: 0.341 (0°C) [Ref.]
water: 0.89 (25°C) [Ref.]
water: 5.24 (75°C) [Ref.]
water: 12.28 (100°C) [Ref.]

Density:

1.538 (25°C, g/cm3)

Vapour pressure (Torr):

10 (175°C)

Dissociation:

pKa (1) = 4.51 (25°C, water)
pKa (1) = 9.95 (25°C, water)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-1009.7 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-29
  2. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 158
  3. Жушман А.И. Производство и применение глютаминовой кислоты и глютамата натрия. - М., 1965. - pp. 5-8 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 141 [Russian]
  5. Руководство к лабораторным занятиям по фармацевтической химии. - Под ред. Арзамасцева А.П. - М.: Медицина, 1987. - pp. 150-151 [Russian]
  6. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 268-269 [Russian]
  7. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 588 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru