Quote Originally Posted by Ian Grant View Post
Look at USP 4095982. Fuji are using Sodium benzenesulfonate (Benzenesulfonic acid sodium salt) as an anti-oxidant.
Ian, are you quite sure about that?

That sulfonate is a soap as well as a biocide and is mentioned as a coating aid, not as an antioxidant, (as far as I was willing to read anyway)...

Did they tuck that info somewhere I did not look,
or did you give us the wrong number?

In anycase, I think the comment that it acts to "decrease" the diffusion of oxygen is much more interesting however. I gather this can be done by forming at least 2 phases of different oxygen solubilty... from my lack of knoweledge of how soaps work, I can only say that it sounds like it might at least be plausable.

Ray