Solubility and diffusion of water in melts of a TV panel glass

The solubility and diffusion of water have been measured between 1000 and 1 400 degreesC in melts of a glass used to produce front panels for televisio n tubes. The diffusivity of water increases by a factor of similar to8 (fro m similar to 8x10(-7) to similar to 6x10(-6) cm(2)/s) over this temperature range. The solubility of water increases only slightly with increasing tem perature with an increase of similar to 10%. Practical extinction coefficie nt at 3500 cm(-1) (18+/-2 l/mol cm) and at 2750 cm(-1) (35+/-12 l/mol cm) f or water have also been measured. Use of these practical extinction coeffic ients allows quantitative determination of the concentration of water disso lved in any sample of this glass.