How is EDTA used in photography?
Answer:
Photography: use of Fe(III)EDTA as oxidizing agent.
Developers also contain water softening agent to prevent calcium scum formation (e.g., EDTA salts, sodium tripolyphosphate, NTA salts, etc.).
The film goes into the pre-bleach (formerly conditioner) bath, which has formaldehyde (as a dye preservative) and EDTA to "kick off" the bleach.
Well, it's interesting that you ask this question...
I was trying to find more about the substance.
I read a statement that said it was SIMILAR to LSD.
It is in MIRACLE GRO and other fertilizer... It use to be in 7-up and I noticed it in cans of beans...
It does not sound as if it is something we want BROADBANDED into our food supply...
I read that it was used to treat LEAD POISONING and I read that it was used for a variety of other things...
EDTA is a very robust chelating agent that is used to remove mineral impurities from the developing solutions. I can assume that a majority of companies (though I don't know for sure) use EDTA because it is cheap and safe.
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