RE: potassium vs. ammonium citrate pd developer

 
Terry, don't panic... I know very well that mixing ammonia and citric
acid will form ammonium citrate (I mixed potassium oxalate and sodium
citrate before, therefore I'm not that much uninformed about
neutralization reactions). What I don't know is:
 
1) the exact proportions of the chemicals in order to end up with a
neutral salt solution
2) if the reaction cause too much effervescence and/or heat and/or
something else that may cause harm
 
That's why I specifically added the comment "...I neither know the
proportions you should use, nor know if that's a dangerous reaction! I'm
just mentioning this for letting a chemist chime in and clarify this
issue..." marked in red and suggested that a "chemist" should intervene
(I repeat: a chemist). Please do not warp what I said or act like we are
totally ignorant about chemicals - this is highly disrespectful.
 
 
-----Original Message-----
From: TERRYAKING@aol.com [mailto:TERRYAKING@aol.com]
Sent: 10 Nisan 2006 Pazartesi 13:11
To: alt-photo-process-l@usask.ca
Subject: Re: potassium vs. ammonium citrate pd developer

Both Chris and Loris

Whatever you do do not treat chemistry like that !

It's a very good way to an early grave and to taking a bus load of
friends, relations and students with you. Seemingly innocuous things
mixed together can prove toxic or explosive. Make sure that you know
what you are doing first !

I have had experience of using potassium citrate, the old fashioned cure
for cystitis, for developing platinum prints, I found that it was more
trouble than it was worth. After a time one begins to realise why people
have been using potassium oxalate for such a long time..

PLEASE, PLEASE, TREAT CHEMICALS WITH RESPECT.

Terry
Received on Mon Apr 10 04:32:33 2006