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Properties of substance:

1,3,5-trimethylbenzene

Group of substances:

organic

Physical appearance:

liquid

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

C9H12

Structural formula as text:

C6H3(CH3)3

CAS No: 108-67-8

Molar/atomic mass: 120.192

Melting point (°C):

-44.72

Boiling point (°C):

164.7

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
benzene: soluble [Ref.]
chloroform: soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
water: 0.00482 (25°C) [Ref.]
water: 0.01943 (99.99°C) [Ref.]

Density:

0.86518 (20°C, d4)

Refractive index (nD):

1.4491 (20°C)

Vapour pressure (Torr):

1 (12.3°C)
10 (48.8°C)
40 (77.2°C)
100 (99.7°C)
400 (141.4°C)

    Retention indices for gas chromatography:

    967,1 (phase - DB-5, temperature-programmed conditions, 6 K/min)

    Viscosity (mPa·s):

    1.154 (20°C)

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

    -16.08 (g)

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

    385.81 (g)

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

    150.35 (g)

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

    9.63

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

    39.15

    LD50 (mg/kg):

    7000 (mice, oral)

    Critical temperature (°C):

    370.5

    Critical pressure (MPa):

    3.27

    References:

    1. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 5.103, 5.153
    2. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 586
    3. Вредные химические вещества: Углеводороды, галогенпроизводные углеводородов. Справочник. - Л.: Химия, 1990. - pp. 175 [Russian]
    4. Соколов В.З., Харлампович Г.Д. Производство и использование ароматических углеводородов. - М.: Химия, 1980. - pp. 14 [Russian]
    5. Справочник нефтехимика. - Т.1, под ред. Огородникова С.К. - Л.: Химия, 1978. - pp. 478-479 [Russian]
    6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 774-775 [Russian]
    7. Химическая энциклопедия. - Т. 3. - М.: Советская энциклопедия, 1992. - pp. 17-18 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru