Pemco Frit P-64 M.P./°F 1299.9 Silica/Alumina ratio: 68.0:1 Equivalent Molecular Weight: 206.958 Molecular Formula of Pemco Frit P-64: K2O 0.010 Al2O3 0.020 SiO2 1.360 Na2O 0.160 B2O3 0.290 ZrO2 0.170 CaO 0.330 F 0.220 ZnO 0.390 BaO 0.110 Percentage Analysis 39.47 % SiO2 0.99 % Al2O3 0.46 % K2O 4.79 % Na2O 8.94 % CaO 8.15 % BaO 15.34 % ZnO 9.73 % B2O3 10.12 % ZrO2 2.02 % F ______________ 100 % TOTAL Comments: 7.8 x 10-6 coefficient of thermal expansion (50-450° C) I.F.P. °C = 616 Melting Range °F = 1300-1420