Hommel Frit 90

M.P./°F 1550

Silica/Alumina ratio: 9.6:1

Equivalent Molecular Weight:  267.200

Molecular Formula of Hommel Frit 90:

	K2O   0.012	Al2O3  0.255	SiO2  2.440
	Na2O  0.273	B2O3   0.535	
	CaO   0.665		
	MgO   0.050		

    Percentage Analysis

	 54.86 % 	SiO2 
	  9.74 % 	Al2O3
	  0.42 % 	K2O  
	  6.33 % 	Na2O 
	  0.76 % 	MgO  
	 13.97 % 	CaO  
	 13.92 % 	B2O3 
	_____________________
	100 % 		TOTAL

Formule en Pourcentage Molaire :

	K2O	0,284 %
	Na2O	6,458 %
	CaO	15,732 %
	MgO	1,183 %
	Al2O3	6,033 %
	B2O3	12,633 %
	SiO2	57,677 %


Comments: 7.7 x10-6 Coefficient of expansion  - 
a close substitute for Ferro Frit 3124