Ethylbenzene

CASRN 100-41-4

Health Hazard Assessments for Effects Other than Cancer


Reference Dose for Oral Exposure (RfD) (PDF) (21 pp, 148 K) last updated: 01/31/1987

RfD (mg/kg-day) System Basis PoD Composite UF Confidence
1 x10-1 Hepatic, Urinary Liver and kidney toxicity NOEL : 9.71 x101
mg/kg-day
1000 Low

Reference Concentration for Inhalation Exposure (RfC) (PDF) (21 pp, 148 K) last updated: 03/01/1991

RfC (mg/m3) System Basis PoD Composite UF Confidence
1 Developmental Developmental toxicity NOAEL (HEC): 4.34 x102
mg/m3
300 Low

Cancer Assessment


Weight of Evidence for Cancer (PDF) (21 pp, 148 K) last updated: 09/17/1988

WOE Characterization Framework for WOE Characterization
D (Not classifiable as to human carcinogenicity) Guidelines for Carcinogen Risk Assessment (US EPA, 1986)
Basis:
  • Nonclassifiable due to lack of animal bioassays and human studies.
  • This may be a synopsis of the full weight-of-evidence narrative.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (21 pp, 148 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (21 pp, 148 K)

Not assessed under the IRIS Program.


Ethylbenzene is being reassessed.

Assessment Manager(s): Paul Reinhart (reinhart.paul@epa.gov), George Woodall (woodall.george@epa.gov)

Step Assessment Materials Released to the Public Release Date Public Meeting Date
1 Problem Formulation Materials 07/2014 09/2014
1 Preliminary Assessment Materials TBD TBD
4 Public Comment Draft TBD TBD
4 Peer Review Draft TBD TBD
7 Post Final Assessment TBD

Please note: Any future dates displayed under Release Date are estimates and subject to change.

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