White V.O. #5

Nepheline syenite 43
Frit 3134 13
Dolomite 5
Talc 16
EPK 8
Silica 15

Na2O 6.2% Al2O3 13.8% SiO2 62.3%
K2O 2.2% B2O3 3.1% P2O5 0.0%
MgO 6.2% TiO2 0.0%
CaO 5.9% Fe2O3 0.1%

Volatiles:
CO2 2.5%
Other 2.1%

Loss On Ignition: 4.4%

Expansion: 73.7 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

Na2O 0.26 Al2O3 0.35 SiO2 2.71
K2O 0.06 B2O3 0.12 P2O5 0.00
MgO 0.40 TiO2 0.00
CaO 0.27 Fe2O3 0.00

Alumina:Silica ratio is 1.00:7.65
Neutral:Acid ratio is 1.00:5.75
Alk:Neut:Acid ratio is 1.00:0.47:2.71