Response to Rodinal chemical components?

Rodinol is a proprietary developer of Agfa-Gaevert origin, and as such I don't think that the formula has ever been officially released. However it's fairly widely understood that the developing agent is Para-aminophenol (probably Hydrochloride salt), activated by sodium hydroxide. It's about the only formulation that can give such a highly concentrated developer coupled with such high activity.
I'll check, but I don't think the official Rodinol formula is published anywhere.

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