Black Ebonies

[Larry]

Liquid B:       copper sulfa-- sounds like copper sulfate.  This is a 
poison if ingested, so wash your hands carefully after handling 
this              chemical.

                 potassium dichromate-- very nasty chemical.  BE 
CAREFUL!!!!  This is even more dangerous than hydrochloric acid!  I'd have 
to look in my data sheets (I'm a few years away from my chem degree now), 
but I know that a similar compound, chromic acid, is so dangereous I had to 
use a face shield and thick neoprene gloves.  I used it for cleaning every 
atom of contaminant off of glassware.  Dichromates are strong oxidizing 
agents, which means that it will burn your skin easily, or eat through 
almost anything.  I believe hammer manufacturers use to use chromium 
compounds to get the purple colour in the underfelt, I'm not sure.  They 
stopped using it because it was dangerous.

Now, I don't mean to scare everyone, but please do be careful.  Use eye 
protection and at lease rubber gloves when handling these chemicals.


Liquid A):  100 gr. Anilinechloride
>                 900 gr. Water ("aqua purificata")
>
>Liquid B):    50 gr. Coppersulfa
>                 100 gr. Potassium Dichromat
>
>                            to be resolved (decomposed?) in
>
>                 700 gr. Water ("aqua purificata"),
>
>                            then added
>
>                 150 gr. Hydrochloric acid 2 M


Larry Beach, RPT
Vancouver, Canada