*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : VE6450000
CHEMICAL NAME           : Rare earth oxides
CAS REGISTRY NUMBER     : 68188-83-0
LAST UPDATED            : 199710
DATA ITEMS CITED        : 4
SYNONYMS/TRADE NAMES :
   * Lanthanum concentrate
 
                       *** 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: 12,621,1993

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X9589
       No. of Facilities: 204 (estimated)
       No. of Industries: 3
       No. of Occupations: 3
       No. of Employees: 17440 (estimated)
       No. of Female Employees: 8591 (estimated)

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

 
                            *** END OF RECORD ***