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Properties of substance:

L-tyrosine

Group of substances:

organic

Physical appearance:

needles crystals

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

C9H11NO3

Structural formula as text:

HOC6H4CH2CH(NH2)COOH

Molar/atomic mass: 181.2

Melting point (°C):

290-295

Decomposition temperature (°C):

344

Solubility (g/100 g of solvent):

1-butanol: 0.00024 (10°C) [Ref.]
1-butanol: 0.00042 (20°C) [Ref.]
1-butanol: 0.000702 (30°C) [Ref.]
1-butanol: 0.00106 (40°C) [Ref.]
1-butanol: 0.002 (55°C) [Ref.]
2-propanol: 0.0017 (10°C) [Ref.]
2-propanol: 0.0027 (20°C) [Ref.]
2-propanol: 0.0037 (30°C) [Ref.]
2-propanol: 0.0107 (55°C) [Ref.]
acetonitrile: 0.0013 (10°C) [Ref.]
acetonitrile: 0.002 (20°C) [Ref.]
acetonitrile: 0.0034 (30°C) [Ref.]
acetonitrile: 0.0062 (40°C) [Ref.]
acetonitrile: 0.013 (55°C) [Ref.]
dimethylformamide: 0.118 (10°C) [Ref.]
dimethylformamide: 0.13 (20°C) [Ref.]
dimethylformamide: 0.154 (30°C) [Ref.]
dimethylformamide: 0.212 (55°C) [Ref.]
ethyl acetate: 0.42 (10°C) [Ref.]
ethyl acetate: 0.531 (20°C) [Ref.]
ethyl acetate: 0.702 (30°C) [Ref.]
ethyl acetate: 1.153 (55°C) [Ref.]
ethylene glycol : 0.00906 (10°C) [Ref.]
ethylene glycol : 0.014 (20°C) [Ref.]
ethylene glycol : 0.027 (30°C) [Ref.]
ethylene glycol : 0.095 (55°C) [Ref.]
water: 0.02 (0°C) [Ref.]
water: 0.05 (25°C) [Ref.]
water: 0.11 (50°C) [Ref.]
water: 0.24 (75°C) [Ref.]
water: 0.56 (100°C) [Ref.]

Dissociation:

pKa (1) = 8.4 (17°C, water)

References:

  1. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 640-641
  2. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 581-582
  3. Губен И. Методы органической химии. - Т. 4, Вып. 2. - М.-Л.: ГНТИХЛ, 1949. - pp. 910 [Russian]
  4. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 508 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 984-985 [Russian]
  6. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 94 [Russian]
  7. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 589 [Russian]
  8. Шрайнер Р., Фьюзон Р., Кёртин Д., Моррил Т. Идентификация органических соединений. - М., 1983. - pp. 623 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru