Aurantia time again!

Margarete somewhere in Europe asks about a stain involving aurantia.
Aurantia is an obsolete textile dye (C. I. 10360) with a wonderful orange color that behaves in staining procedures like picric acid. Lillie  ("H.J. Conn's Biolgical Dyes " ninth edition page 76-77) describes it as both toxic and explosive. Lillie at the time he wrote that book said it was available  from chemical companies mainly in Europe under the long chemical name, or maybe its synonym, imperial yellow..
I cannot really think on why someone must use aurantia instead of another stain.
I have a little bit of Grubler aurantia but I don't think I want to give it away!!

Mike Titford
USA Pathology
Mobile AL USA

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