Hydrquinone Vs Phenidone mixing mistake

[SMBooth]

I just mistakenly used Hydrquinone instead of Phenidone when mixing some 510 pyro. Out of interest I developed a FP4+ at 1:100 to see what would result. To my delight the negative come out really nice.
What is the difference between the two?

 

[John Wiegerink]

If you mixed 1g of Hydroquinone in place of 1g on Phenidone I don't thing that amount of Hydroquinone would have much if any affect at all. Of course, I could be wrong on that one. JohnW

 

[SMBooth]

Well it was 5 gram into 10gram of pyro.

 

[SMBooth]

Sorry it was only .25 gram not the 5 grams (that was Ascorbic Acid) So practically little , if any effect.

 

[jochen]

Hello,
Phenidone is commonly used as a replacement for metol. Since it is more active than metol only 1/9 to 1/8 of the metol amount is necessary. Since Phenidone does not answer to bromide as well as metol, usually benzotriazole is necessary as antifog.