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Properties of substance:

glycylglycine

Group of substances:

organic

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

C4H8N2O3

Structural formula as text:

H2NCH2CONHCH2COOH

Molar/atomic mass: 132.1

Melting point (°C):

260-262

Decomposition temperature (°C):

262

CAS ¹: 556-50-3

Solubility (g/100 g of solvent):

water: 18.48 (25°C) [Ref.]

Numerical data:

Bitter taste threshold concentrations (mM): 58.7

Dissociation:

pKBH+ (1) = 3.126 (25°C, water)
pKa (1) = 8.252 (25°C, water)

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

-747.7 (s)

References:

  1. Armarego W. L. F. Purification of Laboratory Chemicals. - 5ed. - 2003. - pp. 252
  2. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-26
  3. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 260
  4. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 111

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru