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Vanadium
compounds (pentoxide and certain vanadates) are used as catalyst in the oxidation of
SO2 to SO3; ethanol to acetaldehyde; in the syntheses of phthalic
and maleic anhydrides; in the manufacture of polyamides (nylon); sugar
to oxalic acid, and anthracene to anthraquinone. It is also used for the manufacture
of yellow glass; inhibiting UV light transmission in glass; depolarizer;
as developer in photography; and as mordant in dyeing and printing
fabrics and in manufacture of aniline black in form of ammonium
vanadate.
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