Phenidone - Wikipedia, the free encyclopedia Aug 4, 2008 ...Phenidone (1-phenyl-3-pyrazolidinone) is an organic chemical compound whose primary use is as a photographic developer. ...
dissolving phenidone in glycol i heated the glycol to a totally imprecise temperature---bottle hot to the touch but not painful---and dumped in the phenidone powder, at a ratio of 10 g phenidone/100 ml glycol. my understanding from this forum is that this ratio is ...
the ilford pq variants of id-11 (d76) although jd kendall of ilford discovered and patented phenidone (1-phenyl-3-pyrazolidone) in 1941 it was 11 years before the first packaged products containing it went on sale. many of these first developers were simply phenidone based ...
phenidone "spoilage"? does phenidone "go bad" on the shelf? i have kept mine in the same plastic bottle in which the formulary shipped it to me. it is a bit caked--the stuff has the consistency of powdered sugar, tends to cling to itself as if slightly ...
Help a newbie mix a developer The ingredients for 1 litre of ID68 include 0.13gm Phenidone. Given that my scales only measure down to 0.1g, how can I accurately measure 0.13gm Phenidone? How important is it to get these formulae absolutely accurate? ...
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