7.Ferro Frit 3195 Cost/lb: $1.00 M.P./°F 1500.1 Silica/Alumina ratio: 6.8:1 Equivalent Molecular Weight: 340.900 Molecular Formula of Ferro Frit 3195: Na2O 0.313 Al2O3 0.404 SiO2 2.751 CaO 0.686 B2O3 1.099 Percentage Analysis 48.50 % SiO2 12.10 % Al2O3 5.70 % Na2O 11.30 % CaO 22.40 % B2O3 _____________________ 100 % TOTAL Formule en Pourcentage Molaire : Na2O 5,96 % CaO 13,06 % Al2O3 7,69 % B2O3 20,92 % SiO2 52,37 % Comments: 7.1 x 10-6 coefficient of thermal expansion (50-450° C)