Pyrocat-HD: replacement for Phenidone?

Discussion in 'B&W: Film, Paper, Chemistry' started by martin@jangowski.de, Aug 10, 2004.

  1. martin@jangowski.de

    martin@jangowski.de Member

    Messages:
    39
    Joined:
    Jun 10, 2004
    Shooter:
    Medium Format
    I'm planning to test Pyrocat-HD for the first time soon. However, the problems with the solubility of Phenidone makes me think. I successfully use R.Suzukis DS-10 and aquired some Dimezone-S for this. Since Dimezone-S seems interchangeable with Phenidone and is easily soluble in water, it would be a smart move to replace the Phenidone in Pyrocat-HD with Dimezone-S.

    Has someone experience with this?

    Martin
     
  2. Shesh

    Shesh Member

    Messages:
    161
    Joined:
    Nov 27, 2002
    Location:
    Massachusett
    Shooter:
    Multi Format
    Isn't Dimezone-S similar to phenidone? If so, you could try it out.... or just use metol.
     
  3. skahde

    skahde Member

    Messages:
    427
    Joined:
    Feb 16, 2004
    Location:
    Germany
    Shooter:
    Multi Format
    Hi Martin,

    i usually dissolve the chemicals for Pyrocat-HD at room temperature which in the past was even below 20°C and easily got everything into solution without excessive stirring. I see little reason to worry here. My Phenidon is from Suvatlar (CG Chemie).

    best

    Stefan
     
  4. Tom Hoskinson

    Tom Hoskinson Member

    Messages:
    3,879
    Joined:
    Mar 7, 2004
    Location:
    Southern Cal
    Shooter:
    Multi Format
    Martin, since I have about 300 grams of Phenidone, and Phenidone is quite soluble in alcohol and in Propylene Glycol, I have no incentive to try Dimezone-S.

    If I tried a Dimezone-S substitution for Phenidone, I would still use Propylene Glycol as my "A" solution solvent/preservative. I would not use water.