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== Description ==
 
== Description ==
The chemical name for dyes extracted from seeral species of lichen, commonly known as "Orchella weeds" 
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The chemical name for the red dyes extracted from several lichens of the genera ''Evernia'', ''Roccella'', ''Ramalina'' and ''Lecanoria'', such as ''Evernia prunastri'', ''Roccella phycopsis'' and ''Ramalina scopulorum''.
 
[[File:Orchil dyed wool.jpg||thumb|Orchil dyed wool<br>Image credit w. Carter]]
 
[[File:Orchil dyed wool.jpg||thumb|Orchil dyed wool<br>Image credit w. Carter]]
  
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== Additional Images ==
 
== Additional Images ==
(The gallery is a repository for all additional images; new line for each image)
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<gallery>
 
File:indigo_50X2.jpg|Paper dyed with indigo
 
File:indigo_50X2.jpg|Paper dyed with indigo
 
</gallery>
 
  
  
 
== Sources Checked for Data in Record ==
 
== Sources Checked for Data in Record ==
  
(Provide a list of all sources used to generate this record.  Make notations if any source provides different values than included in this record.  Separate each entry with bullets)
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Revision as of 10:51, 26 June 2020

Description

The chemical name for the red dyes extracted from several lichens of the genera Evernia, Roccella, Ramalina and Lecanoria, such as Evernia prunastri, Roccella phycopsis and Ramalina scopulorum.

Orchil dyed wool
Image credit w. Carter

Synonyms and Related Terms

CI Natural Red 28; archil; orchil; lacmus;

Physical and Chemical Properties

Orcein is soluble in ethanol. It is an indicator dye that turns blue in alkaline solutions.

CAS 1400-62-3

Hazards and Safety

(Include all Hazards, Health and Safety information, and links to MSDS sheets)

Fisher Scientific: MSDS

Additional Information

(Place no more than three expert sources for the reader to access for more information)

° H.Schweppe, "Indigo and Woad", Artists Pigments, Volume 3, E. West FitzHugh (ed.), Oxford University Press: Oxford, 1997.

° Pigments Through the Ages: Indigo

Comparisons and related information

(Include pdf files of tables or related information; new line for each file)

Characteristics of Common Blue Pigments

Additional Images

Sources Checked for Data in Record


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