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Glass frosting with hydrofluoric acid

FIGURE 15-22 When a mixture of hydrofluoric acid and ammonium fluoride is swirled inside a glass vial (a i, reaction with the silica in the glass frosts the surface of the cover glass as well as the walls of the vial (b)... [Pg.762]

It is convenient to regard calcium silicate, CaSiOg, as a compound of calcium oxide and silicon dioxide (Ca0,Si02), for thus it is evident why hydrofluoric acid acts on calcium silicate to form the fluorides of both calcium and silicon, together with the second product of double decomposition, water. Glass is a mixture of silicates and silicon dioxide, and when it is exposed to hydrofluoric acid it is acted upon in accordance with the reactions just described. As the action takes place unevenly on a polished surface of glass, the surface becomes pitted and produces a frosted or etched appearance. [Pg.185]

See other pages where Glass frosting with hydrofluoric acid is mentioned: [Pg.75]    [Pg.75]    [Pg.880]    [Pg.605]    [Pg.362]    [Pg.148]    [Pg.312]    [Pg.562]    [Pg.185]    [Pg.135]    [Pg.312]    [Pg.135]    [Pg.237]    [Pg.140]    [Pg.488]    [Pg.224]    [Pg.231]    [Pg.185]    [Pg.210]    [Pg.641]    [Pg.2]   
See also in sourсe #XX -- [ Pg.75 ]

See also in sourсe #XX -- [ Pg.75 ]



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Acids glass

Acids hydrofluoric acid

Frosting

Hydrofluoric acid

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