Phenidone

Chembox new
Name = Phenidone
ImageFile = phenidone.png ImageSize =
ImageName =
ImageFile1 = phenidone-spaceFill.png ImageSize1 =
ImageName1 =
IUPACName = 1-phenyl-3-pyrazolidinone
OtherNames =
Section1 = Chembox Identifiers
SMILES = O=C1CCN(N1)c2ccccc2
CASNo = 92-43-3
EINECS = 202-155-1
Section2 = Chembox Properties
Formula = C₉H₁₀N₂O
MolarMass = 162.19
Appearance = Crystal leaflets or needles
Density =
Solubility = 10 g/100 ml at 100 °C
Solubility1 = 10 g/100 ml (hot)
Solvent1 = ethanol
Solubility2 = practically insoluble
Solvent2 = diethyl ether
MeltingPtC = 121
pKa =
Viscosity =
Dipole =
Section7 = Chembox Hazards
ExternalMSDS = [https://fscimage.fishersci.com/msds/94187.htm External MSDS]
MainHazards = Harmful if swallowed
RPhrases = R20 R22

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."Merck Index of Chemicals and Drugs, 9th ed." monograph 7115]

Preparation

Phenidone is prepared by heating phenyl hydrazine with 3-chloropropionioc acid.

References