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Phenidone

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Phenidone
Names
IUPAC name 1-phenyl-3-pyrazolidinone
Identifiers
CAS Number
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.001.960 Edit this at Wikidata
EC Number
  • 202-155-1
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/C9H10N2O/c12-9-6-7-11(10-9)8-4-2-1-3-5-8/h1-5H,6-7H2,(H,10,12)Key: CMCWWLVWPDLCRM-UHFFFAOYSA-N
  • InChI=1/C9H10N2O/c12-9-6-7-11(10-9)8-4-2-1-3-5-8/h1-5H,6-7H2,(H,10,12)Key: CMCWWLVWPDLCRM-UHFFFAOYAF
SMILES
  • O=C2NN(c1ccccc1)CC2
Properties
Chemical formula C9H10N2O
Molar mass 162.19
Appearance Crystal leaflets or needles
Melting point 121 °C (250 °F; 394 K)
Solubility in water 10 g/100 ml at 100 °C
Solubility in ethanol 10 g/100 ml (hot)
Solubility in diethyl ether practically insoluble
Hazards
Occupational safety and health (OHS/OSH):
Main hazards Harmful if swallowed
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

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.

Phenidone is Ilford's trademark for this material which was first prepared in 1890. It was not until 1940 that Dr. J. D. Kendall, in the laboratories of Ilford Limited, discovered the photographic reducing properties of this chemical. However, large scale manufacturing of the compound did not become feasible until 1951

Preparation

Phenidone is prepared by heating phenyl hydrazine with UMB66.

References

  1. ^ Merck Index of Chemicals and Drugs, 9th ed. monograph 7115

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