Ian,
That's just my point, catechol and pyrogallol are used for relatively non-serious medical treatments, and used
topically, ie applied directly to the skin, in much higher concentrations than those used in developers. Misrepresenting the risks does nothing to enlighten darkroom workers.
Pyrogallol as a treatment for lung cancer:
http://www.ncbi.nlm.nih.gov/pubmed/19233505
http://www.qualityhealth.com/health-...yrogallol-skin
http://www.deepdyve.com/lp/sage/fina...lol-4Kd0SeaG1q
http://cat.inist.fr/?aModele=afficheN&cpsidt=20544959
There seems to be some evidence that pyrogallol is useful in many different forms of medical treatment, and is safe to use in cosmetics. I don't drink pyrogallol, or inject it, or even soak in it, and I don't panic when I get a few drops of a weak solution on my hands. I do wash my hands after a processing session. Maybe I'm being terribly reckless, but no one in the medical field seems to think so.
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