A rapidly working developer requiring only sulfite as an accelerator. Primarily used for printing, but occasionally for negatives. Oxidizes rapidly and keeps poorly

Chemical FormulaC6H8N2O.2HCL

Notes: Amidol is very soluble in water or sulfite but deteriorates rapidly in solution. The keeping properties of amidol in solution can be improved adding a weak acid.

Amid Amidol is energized by sodium sulfite alone, without the necessity of adding any alkali.