1) Rutile is one of three forms of titanium dioxide (TiO2). It occurs in crystals, often in twins or rosettes, and is typically brownish red, although there are black varieties. Rutile is found in igneous and metamorphic rocks, chiefly in Switzerland, Norway, Brazil, and parts of the United States. Rutile is found naturally occurring in small quantities as impurities in iron oxide, chromium oxide and vanadium oxide.
2) Rutile has a tetrahedral crystal structure (i.e. it has one fourfold axis) with 4/m 2/m 2/m symmetry. Its structure is made up of parallel chains of octahedrons, which are in turn composed of a titanium ion surrounded by six oxygen atoms. The model below shows the structure of the octahedron bases, although includes the unit cell edges.
Titanium Dioxide Powder (Rutile Grade) (TiO2) Chemical Properties Available:
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Titanium Dioxide Powder (Rutile Grade) (TiO2) CAS Number:
Titanium Dioxide Powder (Synthetic Rutile Grade) General Description:
1) Synthetic rutile was first produced in 1948 and is sold under a variety of names. Very pure synthetic rutile is transparent and almost colorless (slightly yellow) in large pieces. Synthetic rutile 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.
2) The near-colorless diamond substitute is sold under the name Titania, which is the old-fashioned chemical name for this oxide. However, rutile is seldom used in jewellery because it is not very hard (scratch-resistant), measuring only about 6 on the Mohs hardness scale.