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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 22  1963
A Note on the Study of the As 20 3-As20 5 Equilibrium in Glass
A. PAUL and D. LAHIRI
Pages : 146-150
DOI : 10.1080/0371750X.1963.10855468
Abstract
Alkali-borate, phosphate, silicate and potash-lead-silicate glasses of various compositions were melted with 0.5% As20 3 in electric furnace at different temperatures for different pen1ods. Tota~ .and pentavalent arsenic contents of these glasses were estimated chemically. With the progress .of heating, a steady state between tri and pentavalent arsenic was attained. The ratio As20 3 / As20 5 at this steady state increases with the increase of melting temperature and acidity of the base glass. This ratio is largely determined by the base glass composition. Loss of arsenic was more rapid with increasing As3+ content.
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