35B.Ferro Frit 3482 Wt: 365.5 Fusion temp: 1400 °F Molecular Formula: K2O 0.152 B2O3 0.318 SiO2 2.62 Na2O 0.159 TiO2 0.442 CaO 0.212 F 0.424 PbO 0.477 Percentage Analysis: 43.1 % SiO2 3.9 % K2O 2.7 % Na2O 3.3 % CaO 29.1 % PbO 6.0 % B2O3 9.7 % TiO2 2.2 % F Comments: Source - William Hunt in Ceramics Monthly May 1978 26 (5) p. 48-54; 8.3 x 10-6 coefficient