Cerium Oxide and Cerium Compounds

CASRN 1306-38-3

Health Hazard Assessments for Effects Other than Cancer


Reference Dose for Oral Exposure (RfD) (PDF) (19 pp, 205 K) last updated: 09/29/2009
Information reviewed but value not estimated.

Reference Concentration for Inhalation Exposure (RfC) (PDF) (19 pp, 205 K) last updated: 09/29/2009

RfC (mg/m3) System Basis PoD Composite UF Confidence
9 x10-4 Respiratory Increased incidence of alveolar epithelial hyperplasia in the lungs of male and female rats BMCL (HEC): 0.86
mg/m3
1000 Low

Cancer Assessment


Weight of Evidence for Cancer (PDF) (19 pp, 205 K) last updated: 09/29/2009

WOE Characterization Framework for WOE Characterization
Inadequate information to assess carcinogenic potential Guidelines for Carcinogen Risk Assessment (US EPA, 2005)
Basis:
  • In accordance with U.S. EPA (2005a) Guidelines for Carcinogen Risk Assessment, there is "inadequate information to assess the carcinogenic potential" of cerium in humans.
  • This may be a synopsis of the full weight-of-evidence narrative.

Quantitative Estimate of Carcinogenic Risk from Oral Exposure (PDF) (19 pp, 205 K)

Not assessed under the IRIS Program.

Quantitative Estimate of Carcinogenic Risk from Inhalation Exposure (PDF) (19 pp, 205 K)

Not assessed under the IRIS Program.

You will need Adobe Reader to view some of the files on this page. See EPA’s PDF page to learn more.