Germanium dioxide

NaC103 4, dextrin 3, and trichloracetic acid 1.8 parts. More than 370 formulations are described, many using germanium dioxide, boron... [Pg.445]

Germanium dioxide (Ge02) is thermally reduced (at 600 to 685 °C) with hydrogen to metallic germanium... [Pg.376]

A determination of the heats of solution of germanium dioxide and tetrafluoride in aqueous hydrogen fluoride, to give the same final composition of fluorogermanic acid, when taken in conjunction with the precisely known heats of formation of the solids should also yield a precise value of Aif((HF(aq)) from the overall reaction heat of... [Pg.17]

Nichols, M. L., and S. R. Cooper The germanium-germanium dioxid elec-... [Pg.244]

Germanium [7440-56-4] Germanium dioxide Wistar rats LC5o(4-h) >3.73 Arts et al., 1990... [Pg.1377]

Arts. J.H., Til, H.P., Kuper, C.F., de Neve. R.. and Swennen, B. Acute and subacute inhalation toxicity of germanium dioxide... [Pg.1626]

Germanium has a gray shine with a metallic silvery-white luster. It is a brittle element classed as a semimetal or metalloid, meaning it is neither a metal such as iron or copper nor a nonmetal, such as phosphorus, sulfur, or oxygen. Germanium has some properties like a metal and some like a nonmetal. It is a crystal in its pure state, somewhat like silicon. It will combine with oxygen to form germanium dioxide, which is similar to sihcon dioxide (sand). [Pg.198]

Germanium is not found in its free elemental state because it is much too reactive. For the most part, it is found combined with oxygen, either as germanium monoxide or as germanium dioxide. Also, it is recovered from the ores of zinc, copper, and arsenic and the flue deposits of burning coal. [Pg.198]

Germanium monoxide and germanium dioxide are examples of the elements oxidation states of +2 and +4, as follows ... [Pg.200]

When Germanium dioxide is 99.999% pure, it is used as a semiconductor in transistors, in diodes, and to make special infrared transmitting glass. (The same types of compounds can be formed with chlorine, and Germanium IV) compounds occur mostly with the sulfide of zinc ore.)... [Pg.200]

Germanium dioxide has high refractive index and infrared transmission, for which it is used in industrial glasses. It also is used in preparation of high purity grade germanium. [Pg.318]

Germanium dioxide is prepared by heating germanium with oxygen at elevated temperatures, or by hydrolysis of germanium(IV) halides ... [Pg.318]

Germanium dioxide is reduced to germanium metal when heated with... [Pg.318]

Melting a mixture of germanium dioxide and metal oxides produces ortho-and metagermanates of the corresponding metals. Aqueous solutions of ger-manate react with molyhdic and tungstic acids forming heteropoly acids of varying compositions. [Pg.319]

Germanium dioxide may he characterized hy x-ray methods. Germanium metal may he analyzed in the acidified aqueous extract of the compound by AA, ICP, and other instrumental techniques (See Germanium). [Pg.319]

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