Empirical Equation for Calculating the Density of Oxide Glasses


  • L. Pinckney—contributing editor

  • This work was supported by Grand-in Aid for Science Research (C) No. 21560701 from Japan Society for the Promotion of Science.

†Author to whom correspondence should be addressed. e-mail: sinaba@chem-eng.kyushu-u.ac.jp


The density of oxide glass including silicate, borate, phosphate, tellurite, and germanate glasses were measured using the Archimedes method. On the assumption that the ionic packing ratio is approximately a constant independent of chemical composition, an empirical equation for estimating the density from chemical composition was proposed. The calculated values are in reasonable agreement with the corresponding measured ones.