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Properties of substance:

titanium dioxide colorless

Synonyms:

titanium(IV) oxide colorless

Group of substances:

inorganic

Physical appearance:

colorless tetragonal crystals

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

O2Ti

Structural formula as text:

TiO2

Molar/atomic mass: 79.9

Decomposition temperature (°C):

800-850

Solubility (g/100 g of solvent):

boron oxide molten: 0.6 [Ref.]
calcium chloride fused: insoluble [Ref.]
lithium fluoride fused: 0.39 (1000°C) [Ref.]
lithium fluoride fused: 0.72 (1100°C) [Ref.]
lithium fluoride fused: 1.7 (1200°C) [Ref.]
potassium fluoride fused: 49.45 (1000°C) [Ref.]
potassium fluoride fused: 85.32 (1100°C) [Ref.]
potassium fluoride fused: 140.33 (1200°C) [Ref.]
sodium fluoride fused: 33.4 (1100°C) [Ref.]
sodium fluoride fused: 43.08 (1200°C) [Ref.]
water: insoluble [Ref.]

Density:

4.05 (20°C, g/cm3)

Refractive index (nD):

2.5612 (25°C, no)
2.488 (25°C, nе)

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

-938.6 (s)

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

-883.3 (s)

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

49.92 (s)

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

55.48 (s)

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

58

References:

  1. Горощенко Я.Г. Химия титана. - Киев: Наукова думка, 1970. - pp. 126-167 [Russian]
  2. Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 298-299 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 105 [Russian]
  4. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 593 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru