Agent Name

Phenidone

Alternative Name

1-Phenyl-3-pyrazolidinone

CAS Number

92-43-3

Formula

C9-H10-N2-O

Major Category

Nitrogen Compounds

Synonyms

1-P-3-P; 1-Phenyl-3-oxopyrazolidine;1-Phenyl-3-pyrazolidone; 2-Pyrazolin-3-ol, 1-phenyl; Fenidon; 1-Phenyl-3-pyrazolidone; 2-Pyrazolin-3-ol, 1-phenyl- (7CI); 3-Pyrazolidinone, 1-phenyl-; [ChemIDplus] UN2811

Category

Pyrazoles

Description

Solid; [Merck Index] White powder; [Alfa Aesar MSDS]

Sources/Uses

Used as a non-staining, high-contrast photographic developer; [Merck Index] Used in photography (developer); [www.ci.tucson.az.us/arthazards/medium.html]

Comments

Phenidone is one of the photographic chemicals in the supplemental patch testing tray sold by Chemotechnique. [Marks, Appendix] An irritant; Harmful by ingestion; [Alfa Aesar MSDS] See "4-Hydroxymethyl-4-methyl-1-phenyl-3-pyrazolidinone."

Exposure Assessment
Vapor Pressure

1.63E-5 mm Hg

Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Toxic solid, organic, n.o.s."

Adverse Effects
Skin Sensitizer

Yes

Links to Other NLM Databases
Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: