34.Ferro Frit 3471 M.P./°F 1500 Silica/Alumina ratio: 12.5:1 Equivalent Molecular Weight: 259.064 Molecular Formula of Ferro Frit 3471: K2O 0.071 Al2O3 0.099 SiO2 1.238 Na2O 0.021 B2O3 0.459 CaO 0.300 BaO 0.253 PbO 0.354 Percentage Analysis 28.70 % SiO2 3.90 % Al2O3 2.60 % K2O 0.50 % Na2O 6.50 % CaO 15.00 % BaO 30.49 % PbO 12.30 % B2O3 _____________________ 100 % TOTAL Comments: 8.0 x 10-6 coefficient of expansion (50-450° C) Potential Health Hazards: Contains Lead-avoid ingestion. NOT FOR USE WITH WARE INTENDED FOR FOOD. Follow safe firing practices