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Properties of substance:

2-methyl-1,3-butadiene



skc-file

Synonyms:

isoprene

Group of substances:

organic

Physical appearance:

colorless liquid

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

C5H8

Structural formula as text:

CH2=C(CH3)CH=CH2

Molar/atomic mass: 68.117

Melting point (°C):

-145.95

Boiling point (°C):

34.067

Solubility (g/100 g of solvent):

diethyl ether: very soluble [Ref.]
ethanol: very soluble [Ref.]
water: 0.06419999999 (25°C) [Ref.]

Density:

0.6849 (16°C, d4)
0.6809 (20°C, d4)

Refractive index (nD):

1.4219 (20°C)

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

48.2 (l)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

229.3 (l)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

152.6 (l)

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

75.5 (g)

Enthalpy (heat) of fusion ΔfusH (kJ/mol)

4.83 (s) [Ref.]

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-28
  2. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 149
  3. Вацулик П. Химия мономеров. - Т.1. - М.: ИИЛ, 1960. - pp. 547-561 [Russian]
  4. Мономеры. - Вып.1. - М.: ИИЛ, 1951. - pp. 110-130 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 150 [Russian]
  6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 688-689 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru