Degussa Frit 90191

Alternate Names: 90191 Alkaliborfritte

Description: Alkaliborfritte

Oxide	Analysis	Formula
CaO	1.12%	0.10
K2O	7.49%	0.40
SiO2	63.36%	5.30
B2O3	9.69%	0.70
Na2O	6.17%	0.50
Al2O3	12.17%	0.60
Oxide Weight		502.53
Formula Weight		502.53

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Typecodes

Frit
A frit is the powdered form a man-made glass. Frits are premelted, then ground to a glass. They have tightly controlled chemistries, they are available for glazes of all types.

Data

Co-efficient of Linear Expansion	76 x 10-7 (20-400C)
Heating Microscope Analysis for Frits	543C
Heating Microscope Analysis for Frits	830C
Heating Microscope Analysis for Frits	1250C

By Tony Hansen
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