Hal Faulkner (faulkner@redshift.com)
Sun, 14 Feb 1999 13:11:51 -0800
Dom,
Sodium sulfite is a major ingredient in many photographic chemicals. It is
used as an activator in developers, it is also in most hypo clearing agents
(washing aids) such as Kodak's KHCA. Sulfur dioxide is not a problem with
these chemicals when stored properly.
But, please check with your local/state authorities about the disposal of
these materials. At the very least, contact the Occupational Health and
Safety officer at a nearby university. S/he should be able to point you in
the direction of the information you need to have in order to be a safe and
good neighbor.
Hal
-----Original Message-----
From: Domenick Mirando [mailto:DOMM@delphi.com]
Sent: Sunday, February 14, 1999 12:30 PM
To: alt-photo-process-l@skyway.usask.ca
Subject: Re: Alt and The government
I have just read that sodium sulfite/sulphite is used as a food
preservative,
in bleaching and in photography....but...
...I also read in Richard Farbers' "Historic Photographic Processes" that
when "mixed with water or acid, or when heated, it releases toxic sulfur
dioxide gas" ^^^^^
I can avoid acid and heating but water would be impossible! <G>
So...if I may ask Hal again or anyone else who uses/used sodium sulfite,
how much gas is given off immediatly when mixed with water?
If it is a gradual thing...no problem, since it will be on its way
out of the studio...or no problem if it is just a minor smelling thing.
However, if its nasty and overpowering, then I'll have to add it outside.
Is there anything else that would do the job or should I just not worry
about it?
Thanks,
---Dom
This archive was generated by hypermail 2.0b3 on Sat Nov 06 1999 - 10:06:50