Synthetic Red Iron Oxide (high purity 325 mesh) - Brackers Good Earth Clays

Synthetic Red Iron Oxide (high purity 325 mesh) - Brackers Good Earth Clays

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Bracker's Good Earth Clays provides clay and other ceramic materials, equipment, tools, and toys to potters and sculptors in Kansas, Missouri, Nebraska, Iowa, Arkansas, Oklahoma, Illinois and beyond. In Lawrence Kansas since 1982.
Ceramics%20Monthly%20Technofile%20article%20from%20March%202011%20%22All%20about%20iron%22%20by%20John%20Britt%20%26nbsp%3BIron%26mdash%3BThe%20fourth%20most%20common%20element%20in%20the%20earth%26rsquo%3Bs%20crust%20and%20the%20most%20common%20element%20(in%20terms%20of%20mass)%20on%20the%20planet%2C%20comprising%2035%25%20of%20the%20earth%26rsquo%3Bs%20core.%20%20Melting%20Point%3A%202795%26deg%3BF%20(1535%26deg%3BC%20)%20Toxicity%3A%20Non-toxic%20%20%20Datasheet%20from%20manufacturerSafety%20Data%20Sheet%20(SDS)%26nbsp%3B%20%20%20PLEASE%20NOTE%3AIf%20you%20are%20mixing%20up%20a%20Steven%20Hill%20glaze%20that%20calls%20for%20%22High%20Purity%20Red%20Iron%20Oxide%2C%22%20he%20gets%20his%20materials%20through%20another%20source%20-%20US%20Pigment.%20Steven%20has%20said%20that%20his%20Red%20Orange%20glaze%20will%20NOT%20turn%20out%20as%20expected%20if%20you%20use%20a%20different%20iron.%20Steven%20went%20on%20to%20tell%20me%20that%20using%20the%20US%20Pigment%20version%20of%20the%20high%20purity%20red%20iron%20oxide%20is%20not%20as%20critical%20in%20the%20Juicy%20Fruit%20glaze%20recipe.%20Synthetic%20red%20iron%20oxide%20is%20the%20most%20common%20colorant%20in%20ceramics%20and%20has%20the%20highest%20amount%20of%20iron.%20It%20is%20available%20commercially%20as%20a%20soft%20and%20very%20fine%20powder%20made%20by%20grinding%20ore%20material%20or%20heat%20processing%20ferrous%2Fferric%20sulphate%20or%20ferric%20hydroxide.%20During%20firing%20all%20irons%20normally%20decompose%20and%20produce%20similar%20colors%20in%20glazes%20and%20clay%20bodies%20(although%20they%20have%20differing%20amounts%20of%20Fe%20metal%20per%20gram%20of%20powder).%20Red%20iron%20oxide%20is%20available%20in%20many%20different%20shades%20from%20a%20bright%20light%20red%20at%20a%20deep%20red%20maroon%2C%20these%20are%20normally%20designated%20by%20a%20scale%20from%20about%20120-180%20(this%20number%20designation%20should%20be%20on%20the%20bags%20from%20the%20manufacturer%2C%20darker%20colors%20are%20higher%20numbers)%2C%20however%20in%20ceramics%20these%20different%20grades%20should%20all%20fire%20to%20a%20similar%20temperature%20since%20they%20have%20the%20same%20amount%20iron.%20The%20different%20raw%20colors%20are%20a%20product%20of%20the%20degree%20of%20grinding.%26nbsp%3B%20%20In%20oxidation%20firing%20iron%20is%20very%20refractory%2C%20so%20much%20so%20that%20it%20is%20impossible%2C%20even%20in%20a%20highly%20melted%20frit%2C%20to%20produce%20a%20metallic%20glaze.%20It%20is%20an%20important%20source%20for%20tan%2C%20red-brown%2C%20and%20brown%20colors%20in%20glazes%20and%20bodies.%20Iron%20red%20colors%2C%20for%20example%2C%20are%20dependent%20on%20the%20crystallization%20of%20iron%20in%20a%20fluid%20glaze%20matrix%20and%20require%20large%20amounts%20of%20iron%20being%20present%20(eg.%2025%25).%20The%20red%20color%20of%20terra%20cotta%20bodies%20comes%20from%20iron%2C%20typically%20around%205%25%20or%20more%2C%20and%20depends%20of%20the%20body%20being%20porous.%20As%20these%20bodies%20are%20fired%20to%20higher%20temperatures%20the%20color%20shifts%20to%20a%20deeper%20red%20and%20finally%20brown.%20The%20story%20is%20similar%20with%20medium%20fire%20bodies.%20%20In%20reduction%20firing%20iron%20changes%20its%20personality%20to%20become%20a%20very%20active%20flux.%20Iron%20glazes%20that%20are%20stable%20at%20cone%206-10%20in%20oxidation%20will%20run%20off%20the%20ware%20in%20reduction.%20The%20iron%20in%20reduction%20fired%20glazes%20is%20known%20for%20producing%20very%20attractive%20earthy%20brown%20tones.%20Greens%2C%20greys%20and%20reds%20can%20also%20be%20achieved%20depending%20on%20the%20chemistry%20of%20the%20glaze%20and%20the%20amount%20of%20iron.%20Ancient%20Chinese%20celadons%2C%20for%20example%2C%20contained%20around%202-3%25%20iron.%20%20Particulate%20iron%20impurities%20in%20reduction%20clay%20bodies%20can%20melt%20and%20become%20fluid%20during%20firing%2C%20creating%20specks%20that%20can%20bleed%20up%20through%20glazes.%20This%20phenomenon%20is%20a%20highly%20desirable%20aesthetic%20in%20certain%20types%20of%20ceramics%2C%20when%20the%20particles%20are%20quite%20large%20the%20resultant%20blotch%20in%20the%20glaze%20surface%20is%20called%20a%20blossom.%20%20Iron%20oxide%20can%20gel%20glaze%20and%20clay%20slurries%20making%20them%20difficult%20to%20work%20with%20(this%20is%20especially%20a%20problem%20where%20the%20slurry%20is%20deflocculated).%20%20Iron%20oxide%20particles%20are%20very%20small%2C%20normally%20100%25%20of%20the%20material%20will%20pass%20a%20325%20mesh%20screen%20(this%20is%20part%20of%20the%20reason%20iron%20is%20such%20a%20nuisance%20dust).%20As%20with%20other%20powders%20of%20exceedingly%20small%20particle%20size%2C%20agglomeration%20of%20the%20the%20particles%20into%20larger%20ones%20can%20be%20a%20real%20problem.%20These%20particles%20can%20resist%20break%20down%2C%20even%20a%20powerful%20electric%20mixer%20is%20not%20enough%20to%20disperse%20them%20(black%20iron%20oxide%20can%20be%20even%20more%20difficult).%20In%20such%20cases%20screening%20a%20glaze%20will%20break%20them%20down.%20However%20screening%20finer%20than%2080%20mesh%20is%20difficult%2C%20this%20is%20not%20fine%20enough%20to%20eliminate%20the%20speckles%20that%20iron%20can%20produce.%20Thus%20ball%20milling%20may%20be%20the%20only%20solution%20if%20the%20speckle%20is%20undesired.%20%20Red%20iron%20oxides%20are%20available%20in%20spheroidal%2C%20rhombohedral%2C%20and%20irregular%20particle%20shapes.%20Some%20high%20purity%20grades%20are%20specially%20controlled%20for%20heavy%20metals%20and%20are%20used%20in%20drugs%2C%20cosmetics%2C%20pet%20foods%2C%20and%20soft%20ferrites.%20Highly%20refined%20grades%20can%20have%2098%25%20Fe2O3%20but%20typically%20red%20iron%20is%20about%2095%25%20pure%20and%20very%20fine%20(less%20than%201%25%20325%20mesh).%20Some%20grades%20of%20red%20iron%20do%20have%20coarser%20specks%20in%20them%20and%20this%20can%20result%20in%20unwanted%20specking%20in%20glaze%20and%20bodies.%20%20High%20iron%20raw%20materials%20or%20alternate%20names%3A%20burnt%20sienna%2C%20crocus%20martis%2C%20Indian%20red%2C%20red%20ochre%2C%20red%20oxide%2C%20Spanish%20red.%20Iron%20is%20the%20principle%20contaminant%20in%20most%20clay%20materials.%20A%20low%20iron%20content%2C%20for%20example%2C%20is%20very%20important%20in%20kaolins%20used%20for%20porcelain.%20%20One%20method%20of%20producing%20synthetic%20iron%20oxide%20is%20by%20burning%20solutions%20of%20Ferric%20Chloride%20(spent%20pickle%20liquor%20from%20the%20steel%20industry)%20to%20produce%20Hydrochloric%20Acid%20(their%20main%20product)%20and%20Hematite%20(a%20byproduct).%20100%25%20pure%20material%20contains%2069.9%25%20Fe.%20-%20Digital%20Fire%20ceramic%20materials%20database

Bracker's Good Earth Clays Inc.

Brackers Good Earth Clays Serving Kansas, Missouri, Nebraska, Oklahoma, Iowa, Arkansas & Illinois and beyond

Brackers Good Earth Clays Serving Kansas, Missouri, Nebraska, Oklahoma, Iowa, Arkansas & Illinois and beyond

Tools Brackers Good Earth Clays

Raw Materials & Chemicals - Page 1 - Brackers Good Earth Clays

Brackers Good Earth Clays Serving Kansas, Missouri, Nebraska, Oklahoma, Iowa, Arkansas & Illinois and beyond

General Raw Materials – Tagged Material Type_Coloring Oxides and Carbonates – Krueger Pottery Supply

Raw Materials & Chemicals - Page 1 - Brackers Good Earth Clays

Synthetic Red Iron Oxide (high purity 325 mesh) - Brackers Good Earth Clays

stud io reference - Ceramic Arts Daily

Red Copper Oxide - Brackers Good Earth Clays

Brackers Good Earth Clays Serving Kansas, Missouri, Nebraska, Oklahoma, Iowa, Arkansas & Illinois and beyond

Bracker's Good Earth Clays Inc.