Cochineal

== Description ==
A natural, bright red dye obtained from the body of the female insects Dactylopius coccus Costa (formerly Coccus cacti) that live on nopal cactus (Cactus oputia or C. coccinilifera) in Mexico, the Canary Islands, and in Central and South America. Cochineal was imported to Europe as early as 1540 where it quickly replaced kermes as the primary red dyestuff. The insects are collected from the cacti, then killed and dried in the sun or in an oven. The dye is extracted from dried insects using water or alcohol. It contains about 10% carminic acid, 2% coccerin wax and 10% fat. The colorant was usually used as either a red solution or precipitated to make carmine, an aluminum or aluminum-tin lake. Cochineal produces a transparent lake pigment that has poor lightfastness and fades in strong sunlight.
* See also [Uemera Dye Archive (Enjimushi)] and [Dye Analysis (Cochineal)]
== Synonyms and Related Terms ==
Natural Red 4; CI 75470; cochenille (Fr.); Cochenille (Deut.); cocciniglia (It.); cochinilla (Esp.); Nopalschildlaus (Deut.); Koschenille (Deut.); Karmin (Deut.); kogchinili (Gr.); cocciniglia (It.); cochenille (Ned.); cochonilha (Port.); cochinilha (Port.); carmine; crimson lake; grana; purple lake; red lake; Florentine lake; Venice lake; Paris lake; Vienna lake; nochestli; Nupal's blood; globe lake, karmesin lake; Munich lake; metica; mestique; grana finia; grana silvestra; zacatilla (black cochineal); Dactylopius coccus; Coccus cacti
[[[SliderGallery rightalign|Cochineal.TIF~FTIR (MFA)]]]
== Physical and Chemical Properties ==
Acid-base indicator: a 1% alcohol solution is red when acidic and changes to violet above pH 6. 
ASTM (1999) lightfastness = V (very poor)
== Additional Images ==
File:cochineal_powder_1.jpg|Powdered cochineal (Dactylopius coccus Costa)
File:cocineal.jpg|Fabric dyed with cochineal
File:Uemura 06-04-2009 118.jpg|Silk dyed with cochineal in normal lightUemera Dye Archive]]
File:Uemura 06-04-2009 118 UV.jpg|Silk dyed with cochineal in UV lightUemera Dye Archive]]
== Resources and Citations ==
* H. Schweppe, H.Roosen-Runge, "Carmine-Cochineal, Carmine and Kermes Carmine", Artists Pigments, Volume 1, R. Feller (ed.), Cambridge University Press: Cambridge, 1986. (Also Schweppe color collection index and information book)
* Analytical strategies for natural dyestuffs in cultural heritage objects - EU-ARTECH European research project - http://www.organic-colorants.org
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966 Comment: came to Europe after the conquest of Mexico in 1523
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing) Comment: imported from Mexico as early as 1560.
* Palmy Weigle, Ancient Dyes for Modern Weavers, Watson-Guptill Publications, New York, 1974 Comment: dye brought to Europe in the early 16th century
* Judith Hofenk-de Graaff, Natural Dyestuffs: Origin, Chemical Constitution, Identification, Central Research Laboratory for Objects of Art and Science, Amsterdam, 1969 Comment: imported in 1540 to Antwerp
* J. Thornton, 'The Use of Dyes and Colored Varnishes in Wood Polychromy', Painted Wood: History and Conservation, The Getty Conservation Institute, Los Angeles, 1998
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* S.R.Trotman, E.R. Trotman, Textile Analysis, J.B. Lippincott Company, Philadelphia, 1932
* F. H. Titmuss, Commercial Timbers of the World, The Technical Press Ltd., London, 1965
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* R. Newman, E. Farrell, 'House Paint Pigments', Paint in America , R. Moss ed., Preservation Press, New York City, 1994
* Thomas B. Brill, Light Its Interaction with Art and Antiquities, Plenum Press, New York City, 1980
* Encyclopedia Britannica, http://www.britannica.com "Cochineal." 15 Apr. 2004 .
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 208
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983
* Book and Paper Group, Paper Conservation Catalog, AIC, 1984, 1989
* Website address 1 Comment: www.handprint.com
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database