Lum - two questions;
1. there is a third structure that develops after mercaptans (can;t remember
right now) do you know of such?
2. I was of the understanding (mistaken?) that the Cu sulfate effected only
the H2S - NOT the mercaptan structure, nor the ensuing (above). Is that
wrong?

R


Rick,
Winemakers use one percent copper sulfate solutions ( 1 gram copper
sulfate
in 99 milliliters of water) to remove H2S and mercaptan stench from wine.
The reaction is very quick. Put 50 ml or wine in a glass, add a drop of
1%
solution and stir. If the stench does not disappear, it is _not_ H2S or
mercaptan. More info here
http://www.sdaws.org/Articles/Article4.htm
Good luck,
Lum