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Properties of substance:

l-glutamine



skc-file

Group of substances:

organic

Physical appearance:

white needles crystals

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

C5H10N2O3

Structural formula as text:

H2NCOCH2CH2CH(NH2)COOH

Molar/atomic mass: 146.144

Melting point (°C):

185-186

Decomposition temperature (°C):

186

Solubility (g/100 g of solvent):

water: 1.73 (0°C) [Ref.]
water: 3.572 (20°C) [Ref.]
water: 4.61 (30°C) [Ref.]
water: 3.12 (60°C) [Ref.]

Dissociation:

pKBH+ (1) = 9.13 (25°C, water)
pKa (1) = 2.13 (25°C, water)

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

-826.4 (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. 161-162
  3. Досон Р., Эллиот Д., Эллиот У., Джонс К. Справочник биохимика. - М.: Мир, 1991. - pp. 22 [Russian]
  4. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 139 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru