39.Ferro Frit 3814 M.P./°F 1500 Silica/Alumina ratio: 17.0:1 Equivalent Molecular Weight: 225.138 Molecular Formula of Ferro Frit 3814: K2O 0.009 Al2O3 0.110 SiO2 1.870 Na2O 0.315 B2O3 0.624 CaO 0.676 Percentage Analysis 49.89 % SiO2 4.98 % Al2O3 0.38 % K2O 8.67 % Na2O 16.84 % CaO 19.25 % B2O3 _____________________ 100 % TOTAL Comments: 8.9 x 10-6 coefficient of expansion (50-450° C)