Main page (Russian) Search in database (English)

Properties of substance:

4-hydroxybenzoic acid

Group of substances:

organic

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

C7H6O3

Structural formula as text:

HOC6H4COOH

Molar/atomic mass: 138.121

Melting point (°C):

210

Solubility (g/100 g of solvent):

1,4-dioxane: 14.5 (25°C) [Ref.]
1-butanol: 24.3 (25°C) [Ref.]
acetone: 28.6 (23°C) [Ref.]
benzene: 0.0018 (10°C) [Ref.]
benzene: 0.0027 (20°C) [Ref.]
benzene: 0.0045 (30°C) [Ref.]
benzene: 0.066 (80°C) [Ref.]
carbon disulphide: insoluble [Ref.]
diethyl ether: 13.3 (17°C) [Ref.]
ethanol 99%: 63.27 (67°C) [Ref.]
methanol: 56.79 (15°C) [Ref.]
water: 0.2494 (0°C) [Ref.]
water: 0.4975 (20°C) [Ref.]
water: 0.7488 (30°C) [Ref.]
water: 2.534 (75°C) [Ref.]

Dissociation:

pKa (1) = 4.58 (25°C, water)
pKa (2) = 9.46 (25°C, water)

References:

  1. Dictionary of organic compounds. - Vol. 2, Eccaine - Myrtillin chloride. - London, 1946. - pp. 233
  2. Journal of Physical and Chemical Reference Data. - 2013. - Vol. 42, No. 3. - pp. 033103-379 - 033103-404
  3. Jouyban A. Handbook of solubility data for pharmaceutacals. – CRC Press, 2010. - pp. 72, 76
  4. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 530-531
  5. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 377-378
  6. Полюдек-Фабини Р., Бейрих Т. Органический анализ. - Л.: Химия, 1981. - pp. 166 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 474 [Russian]
  8. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 1142, 1278, 1340, 1420 [Russian]
  9. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 498-499 [Russian]

    What information do you need?




    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru