Phenidone          
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• Phenidone (1-phenyl-3-pyrazolidinone) is an organic chemical compound whose primary use is as a photographic developer.
• It has five to ten times the developing power as Metol.
• It also has low toxicity and, unlike some other developers, does not cause dermatitis upon skin contact.
• One of the most novel properties of Phenidone is the efficiency effected because it is re-activated by Hydroquinone.
•  Phenidone's developing properties are dependent on the pH of the solution.
• Phenidone is slightly soluble in cold water, but as the temperature of the solution increases Phenidone becomes more soluble, It is readily soluble in both acid and alkaline solutions.
• Ilford claims "That a Phenidone -Hydroquinone developer is More Effective Than Any Other Available Developer For Forced Development Where Last-Ditch Exposures With Minimal Highlight Blocking Is Desired."
• Phenidone gives no fog with Low-Speed emulsion papers. However, with high speed emulsions it may produce fog.
• Benzotrlazole added to a paper developer compound with Phenidone, not only prevents fog, but also has the effect of modifying the Tone Of The Silver Image so that Cold Blue-Black Tones are produced.
• The final oxidation product of a Phenidone -Hydroquinone developer is COLORLESS, which reduces, but does not eliminate, the staining of fingers and clothes. This is due in part to the Hydroquinone.

• Introduction Of Phenidone
• Phenidone As a Dual Inhibitor

Product

• Phenidone: SC-200508
• Phenidone B
• Phenidone A

MSDS

• Phenidone B
• 1-Phenyl-3-Pyrazolidone
• 1-Phenyl-4-methyl-3-pyrazolidone
• Arista Premium Paper Developer
• Phenidone

• Company Of India
• Company Of Haryana
• Chinese Phenidone B Report

Patents

• Diazo-Type Recording Material Comprising A 1-phenyl-3-Pyrazolidone(Pheni-done) As An Anti-Oxidant
• High Contrast Continuous Tone Developer And Process Of Use
• Method And Apparatus For Rapid Determination Of 1-Phenyl-3-pyrazolidone(Phenidone) In Developing Solutions
• Photographic Chemical Formula And Process
• Silver Halide Color Photographic Light-Sensitive Material, Phenidone Compound For Use Therein, And Method Of Producing the Same

Synthesis

• Effect of eicosanoid biosynthesis inhibitors 
• Effect of Steroids and Nonsteroidal Agents
• Degradation Of Medical X-Ray Film By Advanced Oxidation Process
• Octadecanoid signalling activation in response to insect elicitors and green leaf volatiles in Zea mays

Suppliers

• Indian Manufacturers Of Phenidone
• Suppliers For CAS 92-43-3
• Phenidone(92-43-3) Suppliers
• Phenidone B CAS 2654-57-1

Reports

• Floral Lipoxygenase: Activity during Senescence
  and Inhibition by Phenidone
• Expression induced by kainic acid in rat hippocampus
• The Effect oF Mixed Inhibitors of Cyclo-Oxygenase and Lipooxygenase
• Lipoxygenase Inhibition decreases Neointimal formation following
  vascular injury
• Prostaglandin Production in Response to a Bacterial
  Infection in True Armyworm Larvae

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