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Properties of substance:

L-valine



skc-file

Group of substances:

organic

Physical appearance:

hexagonal crystals

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

C5H11NO2

Structural formula as text:

(CH3)2CHCH(NH2)COOH

Molar/atomic mass: 117.146

Melting point (°C):

315

Solubility (g/100 g of solvent):

benzene: sparingly soluble [Ref.]
diethyl ether: sparingly soluble [Ref.]
ethanol: sparingly soluble [Ref.]
water: 9.1 (16.5°C) [Ref.]

Density:

1.23 (25°C, g/cm3)

Dissociation:

pI (1) = 5.96 (25°C, water)
pKa (1) = 9.72 (25°C, water)

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

-617.9 (s)

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

-455.1 (g)

References:

  1. Blunt J.W., Munro M.H.G. Dictionary of marine Natural Products. - Chapman and Hall/CRC, 2008. - pp. 1963
  2. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-29
  3. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 174
  4. Досон Р., Эллиот Д., Эллиот У., Джонс К. Справочник биохимика. - М.: Мир, 1991. - pp. 18 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 136 [Russian]
  6. Тюкавкина Н.А., Бауков Ю.И. Биоорганическая химия. - М.: Медицина, 1985. - pp. 299 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru