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Description

The chemical name for dyes extracted from seeral species of lichen, commonly known as "Orchella weeds"

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

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Fisher Scientific: MSDS

Additional Information

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° 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

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Characteristics of Common Blue Pigments

Additional Images

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Sources Checked for Data in Record

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