[Sca-cooks] My last post on pysanky and vinegar
Stefan li Rous
StefanliRous at austin.rr.com
Tue Mar 25 19:13:36 PST 2003
Anne replied to Phlip with:
> But while lye is certainly caustic, it equally certainly isn't acid. In
> fact, it's base. Extremely so. Don't know Aqua Regia.
>
> I think it is possible that when Stefan asked about acid, he did mean
> specifically acid...
No, not really. I guess I should have said etching solution, but I can also
see where such solutions might be used for coloration rather than specifically
for etching. I was trying not to be overly specific, yet give some ideas for
articles that might be interesting.
> I'm pretty sure some mordants used are acid. When dyers in period used
> urine, modern dyers commonly use uric acid... I don't really know a lot
> about this, but it would be a place to look.
I'm not sure if the urine is used as a mordant or to seperate out the dye in woad. Possibly both at different times and processes.
Well, one area to look is this file:
urine-uses-msg (6K) 10/ 6/99 Period uses of animal and human urine.
http://www.florilegium.org/files/CRAFTS/merch-woods-msg.html
Or specifically for dyeing and mordants, these files in the TEXTILE ARTS section::
dyeing-msg (162K) 2/28/00 Dyeing techniques and discussion.
dye-list-art (9K) 2/28/00 A list of period plant dyes by Moriel.
mordants-msg (17K) 7/30/98 Info. on mordants. Period and modern.
(And no, using some of these for food coloring would be a BAD idea...)
The woad info is in the PLANTS, HERBS AND SPICES:
woad-msg (49K) 12/30/99 History of woad. Making dyes from woad.
Stefan
--
THLord Stefan li Rous Barony of Bryn Gwlad Kingdom of Ansteorra
Mark S. Harris Austin, Texas StefanliRous at austin.rr.com
**** See Stefan's Florilegium files at: http://www.florilegium.org ****
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