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Hardwood Ash

Alternate Names: Hard wood ash

Description: Washed

Oxide Analysis Formula
CaO 21.51% 0.30
K2O 33.44% 0.28
MgO 15.85% 0.31
Na2O 2.30% 0.03
P2O5 16.34% 0.09
SiO2 0.67% 0.01
Fe2O3 0.58% -
MnO 2.60% 0.03
SO3 6.71%n/a
Oxide Weight 72.66
Formula Weight 77.88

Related Information

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Materials Cherry Ash
A type of wood ash used as an ingredient in pottery glazes.
Materials Applewood Ash
A type of wood ash used as an ingredient in pottery glazes.
Materials Oakwood Ash
A type of wood ash used as an ingredient in pottery glazes.
Materials Soft Wood Ash
A type of wood ash used as an ingredient in pottery glazes.
Materials Eucalyptus Ash
A type of wood ash used as an ingredient in pottery glazes.
Materials Wood Ash
For centuries, pottery glazes have been made from ash mostly mixed with clay and feldspar.
Typecodes Flux Source
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
Glossary Wood Ash Glaze
Common washed wood ash can supply important ceramic oxides when melted, so it can comprise significant percentages in a recipe. Plus it can produce unique visual effects.
By Tony Hansen
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