Pemco Frit P-54 Cost/lb: $.57 M.P./°F 1400 Equivalent Molecular Weight: 189.700 Molecular Formula of Pemco Frit P-54: Na2O 0.320 B2O3 0.635 SiO2 1.457 CaO 0.680 Percentage Analysis 46.17 % SiO2 10.46 % Na2O 20.12 % CaO 23.26 % B2O3 _____________________ 100 % TOTAL Comments: 8.9 x 10-6 coefficient of thermal expansion (50-450° C) Melting range: 1400-1480° F