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Properties of substance:

titanium(IV) oxide yellow

Group of substances:

inorganic

Physical appearance:

yellow tetragonal crystals

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

O2Ti

Structural formula as text:

TiO2

Molar/atomic mass: 79.9

Melting point (°C):

1892

Decomposition temperature (°C):

2900

Solubility (g/100 g of solvent):

boron oxide molten: insoluble [Ref.]
lithium fluoride fused: 0.1 (930°C) [Ref.]
lithium tetraborate fused: 12 (940°C) [Ref.]
potassium tetraborate fused: 30 (940°C) [Ref.]
water: insoluble [Ref.]

Density:

4.2 (20°C, g/cm3)

Refractive index (nD):

2.61124 (25°C, no)
2.8993 (25°C, nе)

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

-943.9 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

-888.6 (s)

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

50.33 (s)

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

55.02 (s)

References:

  1. Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 298-299 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 105 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru