Titanium dioxide

Titanium dioxide
	; Unit cell of titanium dioxide (rutile form); Titanium Oxygen
Names
	IUPAC names Titanium dioxide; Titanium(IV) oxide
	Other names Titania; Rutile; Anatase; Brookite
Identifiers
CAS Number	13463-67-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:32234 ;
ChEMBL	ChEMBL1201136 ;
ChemSpider	24256 ;
ECHA InfoCard	100.033.327
E number	E171 (colours)
KEGG	C13409 ;
PubChem CID	26042;
RTECS number	XR2775000;
UNII	15FIX9V2JP ;
CompTox Dashboard (EPA)	DTXSID3021352 ;
	InChI InChI=1S/2O.Ti Key: GWEVSGVZZGPLCZ-UHFFFAOYSA-N ; InChI=1/2O.Ti/rO2Ti/c1-3-2 Key: GWEVSGVZZGPLCZ-TYTSCOISAW;
	SMILES O=[Ti]=O;
Properties
Chemical formula	TiO; 2
Molar mass	79.866 g/mol
Appearance	White solid
Odor	Odorless
Density	4.23 g/cm3 (rutile); 3.78 g/cm3 (anatase);
Melting point	1,843 °C (3,349 °F; 2,116 K)
Boiling point	2,972 °C (5,382 °F; 3,245 K)
Solubility in water	Insoluble
Band gap	3.05 eV (rutile)
Magnetic susceptibility (χ)	+5.9·10−6 cm3/mol
Refractive index (nD)	2.488 (anatase); 2.583 (brookite); 2.609 (rutile);
Thermochemistry
Std molar; entropy (S⦵298)	50 J·mol−1·K−1
Std enthalpy of; formation (ΔfH⦵298)	−945 kJ·mol−1
Hazards
NFPA 704 (fire diamond)	1 0 0
Flash point	not flammable
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 15 mg/m3
REL (Recommended)	Ca
IDLH (Immediate danger)	Ca [5000 mg/m3]
Safety data sheet (SDS)	ICSC 0338
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
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Titanium dioxide, also known as titanium(IV) oxide or titania /taɪˈteɪniə/, is the inorganic compound with the chemical formula TiO
₂. When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. It is a white solid that is insoluble in water, although mineral forms can appear black. As a pigment, it has a wide range of applications, including paint, sunscreen, and food coloring. When used as a food coloring, it has E number E171. World production in 2014 exceeded 9 million tonnes. It has been estimated that titanium dioxide is used in two-thirds of all pigments, and pigments based on the oxide have been valued at a price of $13.2 billion.

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