Category: Glaze > Clear
Created 1996-06-02 09:00:00 by Glazy Admin
Categories: Glaze > Clear
Firing Temperature: Δ5-6
Atmospheres: Oxidation, Reduction

This version should have less crazing, but may go opaque If that
happens, try adding a little (1-2%) lithium carbonate to flux it out.
RB - revised for Michelle Lowe (formerly Pale Rutile Blue) 2
transparent and semi matt, and NOT crazed. But no sign of the pale
blue to be found. GREAT semi mat clear, left underglazes true to
color really well.

Material Amount Batch Subtotal
Silica 38.5
Whiting 22.5
Nepheline Syenite (Theoretical) 18.1
EPK 12.1
Gerstley Borate 6.6
Magnesium carbonate 2.2
Total Base:100
Rutile 1.7
Total: 101.7

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO K2O Na2O KNaO P2O5 Fe2O3 TiO2 LOI
Silica38.538.5
Whiting22.512.629.88
Nepheline Syenite (Theoretical)18.110.994.220.020.130.831.772.60.020.13
EPK12.15.534.520.010.020.040.010.050.030.090.051.79
Gerstley Borate6.60.980.071.770.231.280.030.260.290.010.030.011.95
Magnesium carbonate2.21.051.15
Rutile1.70.171.53
Total101.7568.81.771.3114.050.92.052.950.040.31.5814.89
100% no LOI 64.5110.142.041.5116.191.042.363.40.040.351.82

Unity Molecular Formula (UMF)

FLUXES

RO/R2O

0.1 Na2O
0.03 K2O
0.77 CaO
0.1 MgO
STABILIZERS

R2O3

0.27 Al2O3
0.08 B2O3
GLASS-FORMERS

RO2

2.86 SiO2
0.06 TiO2
OTHER

 

0.01 Fe2O3
SILICA:ALUMINA

SiO2:Al2O3

10.79

FLUX RATIO

R2O:RO

0.13 : 0.87

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Clear.

Click and drag to zoom
Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 10.79

Similar Base Recipes

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Hazards

09/2016 Note: This is a new feature. If a recipe material is not listed, that material's data has not yet been added. Some materials only have GHS ratings, while others only have HMIS ratings. Warnings differ between systems and countries. Glazy does not take any responsibility for accuracy of linked SDS information. Contact your ceramics supplier for safety information for your specific materials.
Globally Harmonized System (GHS) Hazardous Materials Identification System (HMIS) SDS Link
Material Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
Silica HarmfulHealth Hazard DANGER From 200-Mesh SDS:
May cause cancer by inhalation.
Causes damage to lungs through prolonged or repeated exposure by inhalation.
* 0 0 E
Whiting Harmful WARNING Causes eye irritation
EPK HarmfulHealth Hazard DANGER EPK Kaolin is a naturally occurring mineral, which may contain amounts of crystalline silica
typically 0.1-1.0%, may cause damage to respiratory system through prolonged or repeated
exposure.
1 0 0 E
Gerstley Borate
Magnesium carbonate WARNING Causes mild skin irritation
Causes eye irritation
Rutile 1 0 0