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Safranin Y Safranin A Gossypimine Cotton red 3,7-Diamino-5-phenylphenazinium Chloride
Dark red powder
Component in some developer formulas
Addition of phenosafranin to developers containing
hydroquinone as the sole developing agent results in causing the hydroquinone
to function as a soft-working developer. When Metol was very expensive, use of
a small amount of this dye with much cheaper hydroquinone produced the same
development action at much lower cost
Photographers' Formulary Phenosafarin - One Gram Review