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Properties of substance:

heptanoic acid

Synonyms:

enanthic acid

Group of substances:

organic

Physical appearance:

colorless oily liquid

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

C7H14O2

Structural formula as text:

CH3(CH2)5COOH

Molar/atomic mass: 130.185

Melting point (°C):

-10.5

Boiling point (°C):

222-224

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
carbon tetrachloride: sparingly soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
water: 0.19 (0°C) [Ref.]
water: 0.241 (15°C) [Ref.]
water: 0.271 (30°C) [Ref.]
water: 0.353 (60°C) [Ref.]

Density:

0.9184 (20°C, d4)

Reactions of synthesis:

  1. Yeild 76-78%. [Ref.1aster]
    3CH3(CH2)5CHO + 2KMnO4 + H2SO4 → 3CH3(CH2)5COOH + K2SO4 + 2MnO2 + H2O

Dissociation:

pKa (1) = 4.89 (25°C, water)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-290
  2. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 427
  3. Маркман А.Л. Химия липидов. - Вып. 1: Жирные кислоты. - Ташкент: Издательство АН Узбекской ССР, 1963. - pp. 16 [Russian]
  4. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 1116-1117 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru