At 2:40 PM -0600 8/29/07, [EMAIL PROTECTED] wrote:
The blue-->brown with bleach issue has me wondering if your blue is actually
indigo, which (I believe, unless I have things backwards) turns
yellow in basic
solutions and blue again in acids. That might also explain why it's so very
hard to remove. Try dipping your brown swatch in vinegar to return
it to blue?
If it works, you know you've got indigo (or a synthetic version of the same
chemical) and could do research from there.
HUH????
Um could someone clarify this??? I was under the impression that once
indigo had been reduced, deposited on the cloth and aired it was darn
near permanent...there are many issues with color changing in
discharge dyeing (applying bleach of some form to dyed cloth), but
that is not my area of interest <G> at this time. Perhaps someone
more skilled could speak up??
Ta
Carol--so many pathways, so little time!
--
Creative Clutter is Better Than Idle Neatness!
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