IRIS

Styrene

CASRN 100-42-5

Noncancer Assessment

Reference Dose for Oral Exposure (RfD) (PDF) (26 pp, 169 K) last updated: 01/31/1987

System RfD (mg/kg-day) Basis PoD Composite UF Confidence
Hepatic, Hematologic 2 x 10-1 Red blood cell and liver effects NOAEL : 2.00 x 102
mg/kg-day
1000 Medium

 


Reference Concentration for Inhalation Exposure (RfC) (PDF) (26 pp, 169 K) last updated: 11/01/1992

System RfC (mg/m3) Basis PoD Composite UF Confidence
Nervous 1 CNS effects NOAEL (HEC): 3.4 x 101
mg/m3
30 Medium

 

Cancer Assessment

Weight of Evidence for Cancer (PDF) (26 pp, 169 K)
Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (26 pp, 169 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (26 pp, 169 K)

Not assessed under the IRIS Program.

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