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Properties of substance:

adenine



skc-file

Group of substances:

organic

Physical appearance:

colorless crystals

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

C5H5N5

Molar/atomic mass: 135.13

Melting point (°C):

360

Solubility (g/100 g of solvent):

chloroform: insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: sparingly soluble [Ref.]
water: 0.06377 (17.5°C) [Ref.]
water: 0.09459 (20°C) [Ref.]
water: 0.2045 (44°C) [Ref.]
water: 0.2439 (100°C) [Ref.]

Dissociation:

pKBH+ (1) = 4.1 (25°C, water)
pKBH+ (2) = 0.1 (25°C, water)
pKa (1) = 9.1 (25°C, water)

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

96.9 (s)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

147 (s)

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

205.7 (g)

LD50 (mg/kg):

227 (rats, oral)
198 (rats, intraperitoneal)
783 (mice, oral)

References:

  1. Blunt J.W., Munro M.H.G. Dictionary of marine Natural Products. - Chapman and Hall/CRC, 2008. - pp. 18
  2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 79
  3. Milne G.W.A. Gardner's Commercially Important Chemicals. - Wiley-Interscience, 2005. - pp. 13
  4. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 143-144
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 120 [Russian]
  6. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 142 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru