Everyone, thanks for the interesting information.
Originally Posted by Photo Engineer
So the TEA isn't primarily for chelation/sequestration, which makes me wonder why two alkalis are needed (TEA and sulfite).
Do you suppose the TEA is needed to convert the ascorbic acid into ascorbate?
If so, could sodium bicarbonate be used instead?
Hmm, come to think of it, I'm not even sure that the ascorbic acid needs to be converted to ascorbate to be super-additive with phenidone.
I know these additional chems are easy to buy, but I'm trying to avoid turning into a chemical-collector.