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Oxides & Colorants

"An oxide which promotes ceramic fusion by interaction with other oxides. The oxides which are usually referred to as fluxes are the alkaline oxides because they interact with the glass-forming silica. Fluxes are monoxides with chemical formulae in the R2O and RO group. The acceptable exceptions are the sesquioxides: boron oxide and bismuth oxide. Fluxes are introduced as monoxides, dioxides, carbonates, and other compounds. Silicates using R2O and R2O3 fluxes soften slowly. Silicates involving RO fluxes tend to soften more quickly."
-The Potter's Dictionary of Materials and Techniques

Displaying products 1 - 25 of 37 results
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Alumina Oxide (Calcined - 325 Mesh)
Alumina Oxide (Calcined - 325 Mesh) (sold per lb.)

Alumina Oxide is an intermediate oxide, and is used to stabilize fluxes and glass formers that compose glazes. It is calcined and ground to 325 mesh.
Axner Price: $2.59
Alumina Oxide (Calcined - 325 Mesh) (sold per lb.)
Antimony Oxide
Antimony Oxide (sold per lb.)

Derived principally from stibnite, its principle use is an opacifier in porcelain enamels.
Axner Price: $21.58
Antimony Oxide (sold per lb.)
Chrome Oxide, Green
Chrome Oxide, Green (sold per lb.)

A versatile colorant used in glazes to most commonly produce various green tints.
Axner Price: $14.85
Chrome Oxide, Green (sold per lb.)
Cobalt Carbonate (1/4 lb.)
Cobalt Carbonate (1/4 lb.)
A fine, particled, lavender powder used as a colorant in glazes and slips. It is the most stable and reliable colorant. Produces various shades of blue when used alone, and will produce the same shades of blue when used in almost every type of glaze.
Axner Price: $7.70
Cobalt Carbonate (1/4 lb.)
Cobalt Carbonate
Cobalt Carbonate (sold per lb.)

A fine, particled, lavender powder used as a colorant in glazes and slips. It is the most stable and reliable colorant. Produces various shades of blue when used alone.
Axner Price: $23.12
Cobalt Carbonate (sold per lb.)
Cobalt Oxide (1/4 lb.)
Cobalt Oxide (1/4 lb.)
A reliable, stable, black powdered oxide. In small amounts it produces consistently strong blue tones. Used as a glaze colorant and brushing oxide decoration.
Axner Price: $10.30
Cobalt Oxide (1/4 lb.)
Cobalt Oxide
Cobalt Oxide (sold per lb.)

A reliable, stable, black powdered oxide. In small amounts it produces consistently strong blue tones. Used as a glaze colorant and brushing oxide decoration.
Axner Price: $30.90
Cobalt Oxide (sold per lb.)
Cobalt Sulfate (1/4 lb.)
Cobalt Sulfate (1/4 lb.)
A water-soluble, reddish powder—the least potent of the cobalt compounds.
Axner Price: $5.86
Cobalt Sulfate (1/4 lb.)
Cobalt Sulfate
Cobalt Sulfate (sold per lb.)

A water-soluble, reddish powder—the least potent of the cobalt compounds.
Axner Price: $17.59
Cobalt Sulfate (sold per lb.)
Copper Carbonate
Copper Carbonate (sold per lb.)

A green powder used as a glaze colorant. Depending on conditions and formulation it may produce green, blue-green or copper red. TOXIC IN RAW FORM.
Axner Price: $10.27
Copper Carbonate (sold per lb.)
Copper Oxide, Black
Copper Oxide, Black (sold per lb.)

This is the oldest glaze colorant known. It is a strong flux and will produce fluid glazes. Can produce copper reds in reduction firings. TOXIC IN RAW FORM.
Axner Price: $11.03
Copper Oxide, Black (sold per lb.)
Copper Oxide, Red
Copper Oxide, Red (sold per lb.)

Red copper is a reduced form of the normal black copper oxide.
Axner Price: $15.99
Copper Oxide, Red (sold per lb.)
Iron Chromate
Iron Chromate (sold per lb.)

Produces grey brown colors in engobes and in underglazes that include zinc. If tin is present it may produce pink and reddish browns. Can also be added with manganese compounds to clay bodies to produce greys or to darken a color.
Axner Price: $2.27
Iron Chromate (sold per lb.)
Iron Oxide - Brown 521
Iron Oxide - Brown 521 (sold per lb.)

A natural iron oxide. Reddish-brown raw color.
Axner Price: $2.51
Iron Oxide - Brown 521 (sold per lb.)
Iron Oxide - Red NR-4284
Iron Oxide - Red NR-4284 (sold per lb.)

Ferric oxide. Basically the same as black iron oxide except not as concentrated.
Axner Price: $4.37
Iron Oxide - Red NR-4284 (sold per lb.)
Iron Oxide - Red Spanish
Iron Oxide - Red Spanish (sold per lb.)
81% Fe2O3 , this imported, natural iron oxide is bright red in its raw form.
Axner Price: $2.25
Iron Oxide - Red Spanish (sold per lb.)
Iron Oxide - Yellow
Iron Oxide - Yellow (sold per lb.)

A weaker form of iron—high clay content.
Axner Price: $5.57
Iron Oxide - Yellow (sold per lb.)
Magnesium Carbonate
Magnesium Carbonate (sold per lb.)

Source of magnesium in glazes. Imparts strength and color with little shrinkage. In larger proportions, it produces a dry opaque quality to glazes.
Axner Price: $5.72
Magnesium Carbonate (sold per lb.)
Magnesium Oxide
Magnesium Oxide (sold per lb.)

For refractory applications.
Axner Price: $3.32
Magnesium Oxide (sold per lb.)
Magnetite (Granular)
Magnetite (Granular) (sold per lb.)

A mineral form of black iron oxide. When mixed in clay body or glazes, produces a speckling effect. (Should be screened due to inconsistent particle sizes.)
Axner Price: $1.72
Magnetite (Granular) (sold per lb.)
Manganese Carbonate (Brown)
Manganese Carbonate (Brown) (sold per lb.)

A weak coloring agent. In an alkaline glaze, a blue-purple or plum color can be obtained. In leadless glazes, a purple-brown may result. It is a power flux.
Axner Price: $8.01
Manganese Carbonate (Brown) (sold per lb.)
Manganese Dioxide 60-80 Mesh
Manganese Dioxide 60-80 Mesh (sold per lb.)

A black powder which gives red, brown, purple or black tones to clay bodies and glazes. A strong flux when added in large amounts to clay bodies.
Axner Price: $2.52
Manganese Dioxide 60-80 Mesh (sold per lb.)
Manganese Dioxide 325 Mesh (Morrocan)
Manganese Dioxide 325 Mesh (Morrocan) (sold per lb.)

A black powder which gives red, brown, purple or black tones to clay bodies and glazes. A strong flux when added in large amounts to clay bodies.
Axner Price: $2.24
Manganese Dioxide 325 Mesh (Morrocan) (sold per lb.)
Nickle Carbonate, Green (1/4 lb.)
Nickle Carbonate, Green (1/4 lb.)
Common glaze colorant. Green nickel produces a variety of browns, blues, grays and yellows depending on the presence of other materials in the glaze.
Axner Price: $5.37
Nickle Carbonate, Green (1/4 lb.)
Nickle Carbonate, Green
Nickle Carbonate, Green (sold per lb.)

Common glaze colorant. Green nickel produces a variety of browns, blues, grays and yellows depending on the presence of other materials in the glaze.
Axner Price: $16.13
Nickle Carbonate, Green (sold per lb.)
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