[pure-silver] Re: Hydroquinone - would you like fries with that?
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Mon, 2 May 2011 18:37:37 -0700
----- Original Message -----
From: "Jim Brick" <jim@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, May 02, 2011 8:45 AM
Subject: [pure-silver] Re: Hydroquinone - would you like
fries with that?
You are correct (as usual) Richard, Metol is used with OPD
thus putting OPD in the role of a solvent, even though these
formulas usually use a large amount of sodium sulfite (?).
Some references list OPD as a reducing agent but I suspect
that if it exhibits this trait, it is only in combination
with other chemicals, such as Metol. Not remotely being an
expert, I just repeat what I read and what you (Richard)
write... :-)
Jim Brick
Sunnyvale, CA
http://www.photomojo.org/vip.swf
The three forms are ortho, meta, and para. This
describes where the amino groups are attached to the benzine
ring of the compound. My mememory is that both para and meta
can be active reducing agents but not ortho. I think this is
true of all hetrocyclic benzine compounds.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
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