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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):
O
2
Ti
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/cm
3
)
Refractive index (n
D
):
2.5612 (25°C, n
o
)
2.488 (25°C, n
е
)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-938.6 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-883.3 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
49.92 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
55.48 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
58
References:
Горощенко Я.Г. Химия титана. - Киев: Наукова думка, 1970. - pp. 126-167 [Russian]
Гринвуд Н., Эрншо А. Химия элементов. - Т.2. - М.: БИНОМ. Лаборатория знаний, 2008. - pp. 298-299 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 105 [Russian]
Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 593 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru