Calcium metaphosphate glass has been dehydroxylated under vacuum and by calcium fluoride addition. An extensive work has been carried out in organic chemistry on the correlation between IR absorption band intensity and physical properties of organic compounds. However, there are very few reports of such correlation in glass science. Kamistos et al, have correlated IR absorption band intensity with glass transition temperature (Tg) of alkali borate glasses. This investigation was undertaken with a view to correlating mathematically (in the form of equations) between the absorption coefficient of an IR overtone and/or combinational band and the properties of calcium metaphosphate glasses to enable one to easily determine the properties of phosphate glasses simply by IR absorbance measurement.
