*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : FK6657000 CHEMICAL NAME : Cerium trioxide CAS REGISTRY NUMBER : 1345-13-7 LAST UPDATED : 199701 DATA ITEMS CITED : 3 MOLECULAR FORMULA : Ce2-O3 MOLECULAR WEIGHT : 328.24 SYNONYMS/TRADE NAMES : * Cerium(III) oxide * Cerium sesquioxide * Cerous oxide * C.I. 77280 * Dicerium trioxide *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 475 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : 85GMAT "Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982 Volume(issue)/page/year: -,33,1982 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2042 No. of Facilities: 473 (estimated) No. of Industries: 7 No. of Occupations: 8 No. of Employees: 19715 (estimated) No. of Female Employees: 10325 (estimated) *** STATUS IN U.S. *** EPA TSCA Section 8(b) CHEMICAL INVENTORY *** END OF RECORD ***