*** 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 ***