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Properties of substance:

aminoacetic acid

Synonyms:

glycine

Group of substances:

organic

Physical appearance:

colorless monoclinic crystals

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

C2H5NO2

Structural formula as text:

H2NCH2COOH

Molar/atomic mass: 75.067

Melting point (°C):

262

Decomposition temperature (°C):

262

Solubility (g/100 g of solvent):

1-butanol: 0.00089 (25°C) [Ref.]
acetone: 0.0029 (25°C) [Ref.]
diethyl ether: insoluble [Ref.]
dimethylsulfoxide: insoluble [Ref.]
ethanol: 0.0037 (25°C) [Ref.]
ethanol 75%: 0.2 (0°C) [Ref.]
ethanol 75%: 0.448 (25°C) [Ref.]
ethanol 75%: 0.756 (45°C) [Ref.]
ethanol 75%: 1.23 (60°C) [Ref.]
ethanol 90%: 0.053 (25°C) [Ref.]
ethanol 95%: 0.008 (0°C) [Ref.]
ethanol 95%: 0.0172 (25°C) [Ref.]
ethanol 95%: 0.0294 (45°C) [Ref.]
ethanol 95%: 0.0488 (60°C) [Ref.]
formamide: 0.555 (25°C) [Ref.]
methanol: 0.041 (25°C) [Ref.]
pyridine: 0.61 (25°C) [Ref.]
quinoline: 0.07 (25°C) [Ref.]
water: 25.3 (25°C) [Ref.]
water: 57.5 (75°C) [Ref.]

Numerical data:

Sweetness potency сompared with a 5% (w/v) aqueous solution of sucrose: 0.96
Sweetness potency сompared with a 3% (w/v) aqueous solution of sucrose: 0.83

Reactions of synthesis:

  1. Yeild 46%. [Ref.1, Ref.2]
    CH2(COOH)2 + HN3 → NH2CH2COOH + N2 + CO2

Reactions:

  1. Yeild 24%. [Ref.1]
    H2NCH2COOH + 2SF4 → CF3CH2NH2 + 2SOF2 + HF
  2. [Ref.1]
    H2NCH2COOH + NOCl → ClCH2COOH + N2 + H2O

Dissociation:

pKa (1) = 9.88 (25°C, water)

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

-528.5 (s)

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

-392.1 (g)

References:

  1. BMC Biophysics. - 2018. - Vol. 11, No. 2 [DOI: 10.1186/s13628-018-0042-4]
  2. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-22
  3. Dictionary of organic compounds. - Vol. 2, Eccaine - Myrtillin chloride. - London, 1946. - pp. 125
  4. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 122-125
  5. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 35-37
  6. Губен И. Методы органической химии. - Т. 4, Вып. 2. - М.-Л.: ГНТИХЛ, 1949. - pp. 911 [Russian]
  7. Досон Р., Эллиот Д., Эллиот У., Джонс К. Справочник биохимика. - М.: Мир, 1991. - pp. 21, 389 [Russian]
  8. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 566 [Russian]
  9. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 141, 222 [Russian]
  10. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 383-384 [Russian]
  11. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1200-1201 [Russian]
  12. Тюкавкина Н.А., Бауков Ю.И. Биоорганическая химия. - М.: Медицина, 1985. - pp. 299 [Russian]
  13. Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 448 [Russian]
  14. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 587 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru