white powder(s) or 99.9% pure gold sintered tablets; tetr, a = 0.533 nm, c =0.6645 nm; thermally stable form of TiO2; hardness 7–7.5 Mohs; dielectric constant 114; used as a white pigment in paints, paper, rubber, etc., as an opacifying agent, and with 99.99% and 99.9% purity as a sputtering target to prepare high index films, and multilayer interference filters [HAW93] [MER06] [CER91] [KIR83]
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UVA absorber (intended for use as
a topical sunscreen).
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Rutile: A naturally occurring
reddish-brown form of titanium(IV) oxide,
TiO4. It is an ore of titanium and is also
used in making ceramics. Some clear varieties of rutile are used as a semiprecious
gemstone.
