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Titanium dioxide

CAS number : 13463-67-7

Molecular weight :79.87

Molecular formula/chemical symbol :O2Ti

Description :

Titanium dioxide

IUPAC name[hide]

Titanium dioxide
Titanium(IV) oxide

Other names[hide]

Titania
Rutile
Anatase
Brookite

Identifiers

CAS number

13463-67-7 YesY

PubChem

26042

ChemSpider

24256 YesY

UNII

15FIX9V2JP YesY

KEGG

C13409 N

ChEBI

CHEBI:32234 YesY

ChEMBL

CHEMBL1201136 N

RTECS number

XR2775000

Jmol-3D images

Image 1

Properties

Molecular formula

TiO2

Molar mass

79.866 g/mol

Appearance

White solid

Odor

odorless

Density

4.23 g/cm3

Melting point

1843 °C

Boiling point

2972 °C

Solubility in water

insoluble

Refractive index (nD)

2.488 (anatase)
2.583 (brookite)
2.609 (rutile)

Thermochemistry

Std enthalpy of
formation
ΔfHo298

?945 kJ·mol?1[1]

Standard molar
entropy
So298

50 J·mol?1·K?1[1]

Hazards

MSDS

ICSC 0338

EU classification

Not listed

Flash point

Non-flammable

Related compounds

Other cations

Zirconium dioxide
Hafnium dioxide

Related titanium oxides

Titanium(II) oxide
Titanium(III) oxide
Titanium(III,IV) oxide

Related compounds

Titanic acid

 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

 

 

 

 

 

 

 

 

 

 

 

 

 

USES :

Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula TiO2. When used as a pigment, it is called titanium white, Pigment White 6, or CI 77891. Generally it is sourced from ilminite, rutile and anatase. It has a wide range of applications, from paint to sunscreen to food colouring. When used as a food colouring, it has E number E171.

Keywords Electronic chemicals



Report :

Form

Crystal system

Synthesis

rutile

tetragonal

anatase

tetragonal

brookite

orthorhombic

TiO2(B)[5]

monoclinic

Hydrolysis of K2Ti4O9 followed by heating

TiO2(H), hollandite-like form[6]

tetragonal

Oxidation of the related potassium titanate bronze, K0.25TiO2

TiO2(R), ramsdellite-like form[7]

orthorhombic

Oxidation of the related lithium titanate bronze Li0.5TiO2

TiO2(II)-(α-PbO2-like form)[8]

orthorhombic

baddeleyite-like form, (7 coordinated Ti)[9]

monoclinic

TiO2 -OI[10]

orthorhombic

cubic form[11]

cubic

P > 40 GPa, T > 1600 °C

TiO2 -OII, cotunnite(PbCl2)-like[12]

orthorhombic

P > 40 GPa, T > 700 °C