30.Ferro Frit 3419 M.P./°F 1000 Equivalent Molecular Weight: 271.362 Molecular Formula of Ferro Frit 3419: Na2O 0.280 B2O3 0.567 SiO2 0.899 PbO 0.720 Percentage Analysis 19.90 % SiO2 6.40 % Na2O 59.20 % PbO 14.50 % B2O3 _____________________ 100 % TOTAL Comments: 8.2 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