1.Ferro Frit 3110 M.P./°F 1400° Silica/Alumina ratio: 31.7:1 Equivalent Molecular Weight: 259.100 Molecular Formula of Ferro Frit 3110: K2O 0.064 Al2O3 0.095 SiO2 3.003 Na2O 0.644 B2O3 0.097 CaO 0.293 Percentage Analysis (weight %) 69.63 % SiO2 3.73 % Al2O3 2.31 % K2O 15.40 % Na2O 6.34 % CaO 2.59 % B2O3 Formule Molaire % K2O 1,53 % Na2O 15,35 % CaO 6,98 % Al2O3 2,26 % B2O3 2,31 % SiO2 71,57 % Comments: 10.1 x 10-6 coefficient of thermal expansion (50-450° C)