Main page (Russian) Search in database (English)

Properties of substance:

3-methylbutanoic acid

Group of substances:

organic

Physical appearance:

colorless liquid

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

C5H10O2

Structural formula as text:

(CH3)2CHCH2COOH

Molar/atomic mass: 102.132

Melting point (°C):

-37.6

Boiling point (°C):

176.7

CAS №: 503-74-2

Solubility (g/100 g of solvent):

chloroform: very soluble [Ref.]
diethyl ether: very soluble [Ref.]
ethanol: very soluble [Ref.]
water: 4.3 (20°C) [Ref.]

Density:

0.917 (20°C, g/cm3)

Dissociation:

pKa (1) = 4.78 (25°C, water)

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

-561.6 (l)

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

-510 (g)

LD50 (mg/kg):

1037 (rats, oral)
1375 (mice, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-29
  2. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 303-306
  3. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 169
  4. Маркман А.Л. Химия липидов. - Вып. 1: Жирные кислоты. - Ташкент: Издательство АН Узбекской ССР, 1963. - pp. 134-135 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 676-677 [Russian]
  6. Справочник химика. - Т. 3. - М.-Л.: Химия, 1965. - pp. 88 [Russian]
  7. Токсикологический вестник. - 2001. - №6. - pp. 38-39 [Russian]

    What information do you need?




    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru