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Properties of substance:

1,2,4-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

CAS No: 95-63-6

Molar/atomic mass: 120.192

Melting point (°C):

-43.8

Boiling point (°C):

169.35

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
benzene: soluble [Ref.]
diethyl ether: soluble [Ref.]
ethanol: soluble [Ref.]
water: 0.0059 (25°C) [Ref.]

Density:

0.8758 (20°C, d4)

Refractive index (nD):

1.5048 (20°C)

Vapour pressure (Torr):

1 (14.8°C)
10 (51.7°C)
40 (80.5°C)
100 (103.4°C)
400 (145.6°C)

    Retention indices for gas chromatography:

    992,8 (phase - DB-5, temperature-programmed conditions, 6 K/min)

    Viscosity (mPa·s):

    0.894 (15°C)
    0.73 (30°C)

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

    -13.94 (g)

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

    396.62 (g)

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

    155.33 (g)

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

    12.35

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

    39.57

    LD50 (mg/kg):

    7000 (rats, oral)
    6900 (mice, oral)

    Critical temperature (°C):

    380.1

    Critical pressure (MPa):

    3.29

    References:

    1. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 5.103
    2. Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 584
    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. - 2 изд., Т.1. - Л.-М.: Химия, 1966. - pp. 652 [Russian]
    7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 926-927 [Russian]
    8. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 133 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru