5.Ferro Frit 3191

M.P./°F 1300
Equivalent Molecular Weight: 248.900

Molecular Formula of Ferro Frit 3191:

	Na2O 	0.501	 B2O3 	1.002 	SiO2 	2.000
	CaO 	0.499

Percentage Analysis (weight %)

	Na2O 	12,47 %
	CaO 	11,24 %
	B2O3 	28,02 %
	SiO2 	48,27 %
	______________
	100 % 	TOTAL

Molaire % :

	Na2O	12,52 %
	CaO	12,47 %
	B2O3	25,04 %
	SiO2	49,98 %

Comments: 

	9.2 x 10-6coefficient of thermal expansion (50-450° C)