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Properties of substance:

2-pentanone

Group of substances:

organic

Physical appearance:

colorless liquid

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

C5H10O

Structural formula as text:

CH3COCH2CH2CH3

Molar/atomic mass: 86.132

Melting point (°C):

-77.8

Boiling point (°C):

102

CAS №: 107-87-9

Solubility (g/100 g of solvent):

diethyl ether: miscible [Ref.]
ethanol: miscible [Ref.]
water: 9.5 (0°C) [Ref.]
water: 5.8 (25°C) [Ref.]
water: 4 (80°C) [Ref.]

Density:

0.81236 (15°C, d15)
0.8089 (20°C, d4)

Refractive index (nD):

1.3895 (20°C)

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-297.3 (l) [Ref.]
-258.8 (g) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

184.1 (l) [Ref.]

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-29, 8-114
  2. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 274-275 [Russian]
  3. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 868-869 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru