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Properties of substance:

triphenylmethane



skc-file

Group of substances:

organic

Physical appearance:

colorless crystals

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

C19H16

Structural formula as text:

(C6H5)3CH

Molar/atomic mass: 244.32

Melting point (°C):

94

Boiling point (°C):

359

Solubility (g/100 g of solvent):

aniline: 5.7 (23°C) [Ref.]
benzene: 4.06 (4°C) [Ref.]
benzene: 7.24 (19.4°C) [Ref.]
benzene: 8.95 (23.1°C) [Ref.]
carbon disulphide: 0.99 (-113.5°C) [Ref.]
carbon disulphide: 3.52 (-60°C) [Ref.]
carbon disulphide: 34.77 (0°C) [Ref.]
carbon disulphide: 76 (20°C) [Ref.]
chloroform: 40.65 (0°C) [Ref.]
chloroform: 70.9 (20°C) [Ref.]
chloroform: 176.2 (50°C) [Ref.]
diethyl ether: very soluble [Ref.]
ethanol: sparingly soluble [Ref.]
hexane: 3.6 (0°C) [Ref.]
hexane: 9.05 (20°C) [Ref.]
pyridine: 85.9 (22.8°C) [Ref.]
pyrrole: 32.1 (24.6°C) [Ref.]
sulfur dioxide: 19 (20°C) [Ref.]
thiophene: 35.1 (25.7°C) [Ref.]
water: insoluble [Ref.]

Density:

1.014 (99°C, d4)

Refractive index (nD):

1.5839 (99°C)

Dissociation:

pKa (1) = 33 (25°C, water)

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

-162.19 (s)

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

312.57 (s)

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

295.4 (s)

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

21.57

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 3-540
  2. Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 792-794
  3. Справочник по растворимости. - Т.1, Кн.2. - М.-Л.: ИАН СССР, 1962. - pp. 976, 1315, 1371, 1445-1446, 1462, 1471 [Russian]
  4. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 7 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru