Pemco Frit P-688

M.P./°F 1550

Silica/Alumina ratio: 11.9:1

Equivalent Molecular Weight:  160.785

Molecular Formula of Pemco Frit P-688:

	K2O   0.051	Al2O3  0.111	SiO2  1.312
	Na2O  0.041		
	CaO   0.453		
	MgO   0.171		
	ZnO   0.172		
	BaO   0.111		

     Percentage Analysis

	 49.00 % 	SiO2 
	  7.01 % 	Al2O3
	  2.99 % 	K2O  
	  1.60 % 	Na2O 
	  4.30 % 	MgO  
	 15.80 % 	CaO  
	 10.60 % 	BaO  
	  8.70 % 	ZnO  
	_____________________
	100 % 		TOTAL

Comments: 8.0 x 10-6 coefficient of thermal expansion (50-450° C) I.F.P.
  °C =  Melting Range °F = 1550-2100