a. Also called titanium oxide, titanic dioxide, titanic oxide, titania, rutile, anatase, or brookite. Colorless, white, pale yellow or yellowish-red, reddish-brown, brown, blue or bluish, violet, and black; tetragonal and orthorhombic; TiO2 ; molecular weight, 79.90; sp gr, 3.82 to 5.13 depending on crystal system and crystal form; Mohs hardness, 5.5 to 6.5; melting point, 1,825 to 1,850 degrees C; boiling point, 2,500 to 3,000 degrees C; insoluble in water and in most acids; and soluble in hot concentrated sulfuric acid and in alkalies. Titanium dioxide occurs as the minerals rutile (tetragonal); anatase or octahedrite (tetragonal); and brookite (orthorhombic). Titanium dioxide is a common constituent of iron ores. Handbook of Chemistry and Physics, 2; CCD, 2
b. Titanium dioxide as rutile: colorless, pale yellow, reddish-brown, red, bluish, violet, and black; tetragonal; adamantine to submetallic luster; refractive indexes, 2.616 and 2.903; sp gr, 4.26 and ranges from 4.18 to 5.13; Mohs hardness, 6.0 to 6.5; and the same melting points, boiling points and solubility characteristics as above. Titanium dioxide possesses the gredatest hiding power of all the white pigments. Used in glassware and in ceramics, in enamel frits, in welding rods, and single crystals are used as high-temperature transducers. Syn: titania; octahedrite.
Source:
Dictionary of Mining, Mineral, and Related Terms












    What Topic Is Your Geology Paper On?  

 ENTER YOUR TOPIC HERE:    

Over 70,000 Research Papers, Essays & Term Papers - Ready to Download!

<Navigation>


Search!


<Index>

Acoustics
Agriculture
Anthropology
Archaeology
Architecture
Biology
Biotechnology
Cancer
Chemistry
Composers
Dance
Electronics
Environment
Fine Art
Geology
Invertebrate
Plant
Political Science
Psychology
Scientists
Sociology


<Top Level>

WebRef.org
About Us
Copyright Notice
Privacy Statement


Iverson Software: Providing Reliable & Innovative Education Solutions since 1987!

About Us  DeveloDex™  OptiMall™  Success Tools  Tabularium™  WebRef™

Google
Search WWW Search webref.org


K12 Shipping
JourneyEd.com is the leading supplier of discounted software to students and faculty.


icon



Easy CGI Web Hosting
This site hosted by EASY CGI Web Hosting
Iverson Software Co., is not responsible for typographical errors. Information deemed to be accurate, but not guaranteed. Offers subject to change at any time. Copyright © 1987-2006 Iverson Software Co. Some material copyright of their respective holders. All Rights Reserved Worldwide.