Category: Glaze > Iron > Kaki, Tomato Red
Created 2017-10-11 10:02:47 by Tom Demeranville
Categories: Glaze > Iron > Kaki, Tomato Red
Firing Temperature: Δ5-8
Atmospheres: Oxidation
Surface Type: Glossy - Semi
Transparency: Opaque

Reformulated orange street adds quite a bit of clay and silica, removes some flux. Hopefully just as nice to look at, but less runny at cone 7.

Used normal iron, not synthetic. I think.

Material Amount Batch Subtotal
BPS potash feldspar 32
Silica 18
Gillespie Borate 14
Talc (Theoretical) 11
Devon China Clay 10
Bone Ash 9
Dolomite 6
Total Base:100
Red iron oxide 15
Total: 115

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO SrO K2O Na2O KNaO P2O5 Fe2O3 TiO2 LOI
BPS potash feldspar3221.065.923.621.024.64
Gillespie Borate141.650.243.430.553.220.060.530.534.33
Talc (Theoretical)116.973.510.52
Devon China Clay104.73.730.
Bone Ash95.023.810.16
Red iron oxide1514.250.75
100% no LOI 49.989.433.275.149.620.063.681.495.173.6413.670.02

Unity Molecular Formula (UMF)



0.07 Na2O
0.11 K2O
0.47 CaO
0.35 MgO


0.26 Al2O3
0.13 B2O3


2.3 SiO2


0.24 Fe2O3
0.07 P2O5





0.18 : 0.82

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Iron > Kaki, Tomato Red.

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Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 8.97

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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
Talc (Theoretical) Harmful WARNING Causes mild skin irritation
Harmful if inhaled
May cause respiratory irritation
1 0 0 E
Bone Ash
Dolomite Health Hazard DANGER May cause cancer (Inhalation) 1 0 0 E
Red iron oxide Health Hazard WARNING May cause damage to lung through prolonged or repeated exposure by inhalation