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Properties of substance:

1,2,3-trimethylbenzene

Group of substances:

organic

Physical appearance:

colorless liquid

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

C9H12

Structural formula as text:

C6H3(CH3)3

Molar/atomic mass: 120.192

Melting point (°C):

-25.375

Boiling point (°C):

176.084

CAS №: 526-73-8

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
benzene: soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
water: 0.00752 (25°C) [Ref.]

Density:

0.89438 (20°C, d4)

Refractive index (nD):

1.5139 (20°C)

Vapour pressure (Torr):

1 (19.3°C)
10 (56.8°C)
40 (86°C)
100 (109.1°C)
400 (152°C)

Retention indices for gas chromatography:

1022,7 (phase - DB-5, temperature-programmed conditions, 6 K/min)

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

-9.59 (g)

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

391.47 (g)

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

154.28 (g)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

8.37

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

40.36

Critical temperature (°C):

391.3

Critical pressure (MPa):

3.21

References:

  1. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 585
  2. Соколов В.З., Харлампович Г.Д. Производство и использование ароматических углеводородов. - М.: Химия, 1980. - pp. 14 [Russian]
  3. Справочник нефтехимика. - Т.1, под ред. Огородникова С.К. - Л.: Химия, 1978. - pp. 478-479 [Russian]
  4. Справочник химика. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 652 [Russian]
  5. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 594-595 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru