*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : FK6310000
CHEMICAL NAME           : Cerium oxide
CAS REGISTRY NUMBER     : 1306-38-3
LAST UPDATED            : 199710
DATA ITEMS CITED        : 5
MOLECULAR FORMULA       : Ce-O2
MOLECULAR WEIGHT        : 172.12
SYNONYMS/TRADE NAMES :
   * Ceria
   * Ceric dioxide
   * Ceric oxide
   * Cerium dioxide
   * Cerium(4+) oxide
   * Molycomp 5310
   * Needlal
   * Needlal U15
   * Needlal W15
   * Needlal W10-01
   * Nidoral
   * Opaline
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : >5 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   ATDAEI Acute Toxicity Data. Journal of the American College of Toxicology,
   Part B. (Mary Ann Liebert, Inc., 1651 Third Ave., New York, NY 10128)  V.1-
   1990-  Volume(issue)/page/year: 12,617,1993
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 50 mg/m3/4H/17W-I
TOXIC EFFECTS :
   Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)
   Liver - liver function tests impaired
   Biochemical - Enzyme inhibition, induction, or change in blood or tissue
   levels - transaminases
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 18(10),29,1974

         *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 11740
       No. of Facilities: 515 (estimated)
       No. of Industries: 8
       No. of Occupations: 11
       No. of Employees: 25130 (estimated)
       No. of Female Employees: 13436 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***