Pemco Frit P-586 M.P./°F 1600 Silica/Alumina ratio: 10.2:1 Equivalent Molecular Weight: 188.802 Molecular Formula of Pemco Frit P-586: K2O 0.080 Al2O3 0.152 SiO2 1.550 Na2O 0.049 B2O3 0.122 CaO 0.481 MgO 0.028 ZnO 0.311 BaO 0.050 Percentage Analysis 49.30 % SiO2 8.20 % Al2O3 4.00 % K2O 1.60 % Na2O 0.60 % MgO 14.30 % CaO 4.09 % BaO 13.41 % ZnO 4.50 % B2O3 _____________________ 100 % TOTAL Comments: 7.5 x 10-6 coefficient of thermal expansion (50-450° C) I.F.P. °C = 689 Melting Range °F = 1600-1860