Difference between revisions of "Cobalt pigments"

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-== Description ==
-Cobalt pigments are very stable, inert, unaffected by most chemicals and are not light sensitive. The most common cobalt pigment, [http://cameo.mfa.org/materials/fullrecord.asp?name=cobalt blue cobalt blue], is a cobalt aluminate and it was discovered in 1802. [http://cameo.mfa.org/materials/fullrecord.asp?name=cerulean blue Cerulean blue] is also a cobalt pigment (cobalt stannate). Cobaltic oxide is a black powder, [http://cameo.mfa.org/materials/fullrecord.asp?name=cobaltic oxide cobalt black], that was used since the 8th century to give a brilliant blue color glaze and enamel. [http://cameo.mfa.org/materials/fullrecord.asp?name=cobalt green Cobalt green](cobalt oxide with some zinc oxide), [http://cameo.mfa.org/materials/fullrecord.asp?name=cobalt violet cobalt violet] (cobalt phosphate or cobalt arsenate) and [http://cameo.mfa.org/materials/fullrecord.asp?name=cobalt yellow cobalt yellow] (potassium cobalt nitrite) were discovered by the mid-nineteenth century. [http://cameo.mfa.org/materials/fullrecord.asp?name=smalt Smalt], the earliest cobalt containing pigment, is actually glass which is colored with cobalt oxide and reduced to a powder.
-== Synonyms and Related Terms ==
-pigmentos de cobalto (Esp., Port.); pigments de cobalt (Fr.); pigmenti al cobalto (It.)
- Examples include: cobalt blue; Thenard's blue; Leithner blue; kings blue; zaffre; smalt; cobalt green; Rinman's green; zinc green; cobalt violet; cobalt red; cobalt yellow; aureolin; Dumont's blue; royal blue; cerulean blue; cobalt black;
-== Hazards and Safety ==
-In general, cobalt pigments are moderately toxic. Skin contact may cause allergies, especially on elbows, neck and ankles.  Chronic inhalation may cause asthma.Ingestion may cause vomiting, diarrhea and sensation of hotness.
-== Authority ==
-* R. J. Gettens, G.L. Stout, R. J. Gettens, G.L. Stout, ''Painting Materials, A Short Encyclopaedia'', Dover Publications, New York, 1966
-* Ralph Mayer, Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing)
-* Michael McCann, Michael McCann, ''Artist Beware'', Watson-Guptill Publications, New York City, 1979
-[[Category:Materials database]]

Difference between revisions of "Cobalt pigments"

Revision as of 07:49, 24 July 2013

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