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Title: Chemistry/History - Lichen Purple The history and chemistry of orcein, orchil, litmus, parelle and French purple with extensive bibliography.
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Lichen Purple, history and chemistry Lichen purple Lichen purple is a general term used to describe purple dyes derived from lichens. It was known to the ancient Greeks and Romans. But unlike other ancient dyes (indigo, Tyrian purple &c) the origin and chemical composition of the dye are less exact.  These pages describe the history and chemistry of the dyes and give some of the classical recipes with extensive bibliographic references.   Some of the names used for the purple dye are  archil orchil orcein litmus cudbear persio La Parelle La pourpre Français The methods used to process the lichen to give purple dye are very similar: react it with ammonia (urine in former days) and air for a period of weeks.       Some web references ...      Viking Age Dyestuffs  Orchil, the poor person's purple  Orchil  Orcein  Litmus  Cudbear   Bibliography   La Parelle  La pourpre Français last modified ... document.write(document.lastModified);  Email: webmaster@chriscooksey.demon.co.uk   Indigo   Tyrian purple   Henry Edward Schunck   Dyes in History and Archaeology   Murexide   Home
 

The

history

and

chemistry

of

orcein,

orchil,

litmus,

parelle

and

French

purple

with

extensive

bibliography.

http://www.chriscooksey.demon.co.uk/lichen/

Lichen Purple 2008 November

dvd rental

dvd


The history and chemistry of orcein, orchil, litmus, parelle and French purple with extensive bibliography.

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