The Molecular Structure of Rutile (CAS NO.1317-80-2):

Empirical Formula: O₂Ti
Molecular Weight: 79.8658 
IUPAC Name: dioxotitanium 
Product Categories: Inorganics
Nominal Mass: 80 Da
Average Mass: 79.8658 Da
Monoisotopic Mass: 79.937776 Da 
Density: 4.26 g/mL at 25 °C(lit.)
Synonyms: Austiox R-CR ; CCRIS 9325 ; EINECS 215-282-2 ; JR 600A ; R 830 (mineral) ; Sagenite ; TR-700 ; Titanium oxide ; Unitane OR ; Rutile (TiO2) ; Rutile titanium dioxide 
It is a mineral composed primarily of titanium dioxide.the most common natural form of TiO2, and it is found as an accessory mineral in some altered igneous rocks, and in certain gneisses and schists.

The main uses for Rutile (CAS NO.1317-80-2) are the manufacture of refractory ceramic, as a pigment, and for the production of titanium metal.Finely powdered rutile is a brilliant white pigment and is used in paints, foods, plastics, paper, and other applications that call for a bright white color. Titanium dioxide pigment is the single greatest use of titanium worldwide. It is widely used as a welding electrode covering.

In 2005 ,the Republic of Sierra Leone in West Africa had a production capacity of 23% of the world's annual Rutile supply, which rose to approximately 30% in 2008. The reserves, lasting for about 19 years, are estimated at 259,000,000 metric tons (285,000,000 short tons).

RTECS  XR2275000

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 47 ,1989,p. 307.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Limited Evidence IMEMDT  IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 47 ,1989,p. 307.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 47 ,1989,p. 307.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory.

Questionable carcinogen. When heated to decomposition it emits toxic vapors of Ti.
Hazard Codes: Xn
Risk Statements: 20-36/37/38 
R20: Harmful by inhalation
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36: Wear suitable protective clothing
RTECS: XR2275000

 Synthetic Rutile (CAS NO.1317-80-2) was first produced in 1948 .Very pure synthetic rutile is transparent and almost colorless (slightly yellow) in large pieces. It can be made in a variety of colors by doping, although the purest material is almost colorless. The high refractive index gives an adamantine lustre and strong refraction that leads to a diamond-like appearance. The near-colorless diamond substitute is sold under the name Titania .