27.Ferro Frit 3300 M.P./°F 1700 Silica/Alumina ratio: 7.2:1 Equivalent Molecular Weight: 207.400 Molecular Formula of Ferro Frit 3300: K2O 0.071 Al2O3 0.187 SiO2 1.340 Na2O 0.025 CaO 0.326 MgO 0.022 ZnO 0.267 BaO 0.083 PbO 0.206 Percentage Analysis 38.81 % SiO2 9.19 % Al2O3 3.22 % K2O 0.75 % Na2O 0.43 % MgO 8.82 % CaO 6.14 % BaO 22.17 % PbO 10.48 % ZnO _____________________ 100 % TOTAL Comments: 8.3 x10-6 Coefficient of expansion Potential Health Hazards: Contains Lead-avoid ingestion. NOT FOR USE WITH WARE INTENDED FOR FOOD. Follow safe firing practices