*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : WW5505000
CHEMICAL NAME           : Tantalum
CAS REGISTRY NUMBER     : 7440-25-7
LAST UPDATED            : 199712
DATA ITEMS CITED        : 29
MOLECULAR FORMULA       : Ta
MOLECULAR WEIGHT        : 180.95
WISWESSER LINE NOTATION :  TA
COMPOUND DESCRIPTOR     : Tumorigen
SYNONYMS/TRADE NAMES :
   * Tantalum-181
   * Tantalum, metal
 
                       *** HEALTH HAZARD DATA ***
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Implant
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 3760 mg/kg
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Tumorigenic - tumors at site of application
REFERENCE :
   CNREA8 Cancer Research. (Public Ledger Building, Suit 816, 6th & Chestnut
   Sts., Philadelphia, PA 19106)  V.1-    1941-  Volume(issue)/page/year:
   16,439,1956

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 5 mg/m3
   DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
   (BEIs) booklet issues by American Conference of Governmental Industrial
   Hygienists (ACGIH), Cincinnati, OH, 1996  Volume(issue)/page/year:
   TLV/BEI,1997

                    *** U.S. STANDARDS AND REGULATIONS ***
 
   MSHA STANDARD-air:TWA 5 mg/m3
   DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
   (BEIs) booklet issues by American Conference of Governmental Industrial
   Hygienists (ACGIH), Cincinnati, OH, 1996  Volume(issue)/page/year:
   3,243,1971

   OSHA PEL (Gen Indu):8H TWA 5 mg/m3
   CFRGBR Code of Federal Regulations.  (U.S. Government Printing Office, Supt.
   of Documents, Washington, DC 20402)  Volume(issue)/page/year:
   29,1910.1000,1994

   OSHA PEL (Construc):8H TWA 5 mg/m3
   CFRGBR Code of Federal Regulations.  (U.S. Government Printing Office, Supt.
   of Documents, Washington, DC 20402)  Volume(issue)/page/year:
   29,1926.55,1994

   OSHA PEL (Shipyard):8H TWA 5 mg/m3
   CFRGBR Code of Federal Regulations.  (U.S. Government Printing Office, Supt.
   of Documents, Washington, DC 20402)  Volume(issue)/page/year:
   29,1915.1000,1993

   OSHA PEL (Fed Cont):8H TWA 5 mg/m3
   CFRGBR Code of Federal Regulations.  (U.S. Government Printing Office, Supt.
   of Documents, Washington, DC 20402)  Volume(issue)/page/year:
   41,50-204.50,1994

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-ARAB Republic of Egypt:TWA 0.1 mg/m3 JAN 1993
   
   OEL-AUSTRALIA:TWA 5 mg/m3 JAN 1993
   
   OEL-BELGIUM:TWA 5 mg/m3 JAN 1993
   
   OEL-DENMARK:TWA 5 mg/m3 JAN 1993
   
   OEL-FINLAND:TWA 5 mg/m3 JAN 1993
   
   OEL-FRANCE:TWA 5 mg/m3 JAN 1993
   
   OEL-GERMANY:TWA 5 mg/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 5 mg/m3 JAN 1993
   
   OEL-THE PHILIPPINES:TWA 5 mg/m3 JAN 1993
   
   OEL-RUSSIA:STEL 10 mg/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 5 mg/m3 JAN 1993
   
   OEL-UNITED KINGDOM:TWA 5 mg/m3;STEL 10 mg/m3 JAN 1993
   
   OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
   
   OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

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

NIOSH RECOMMENDED EXPOSURE LEVEL (REL) :
   NIOSH REL TO TANTALUM, metal/oxide dust-air:TWA 5 mg/m3;STEL 10 mg/m3
REFERENCE :
   NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of
   Health, Education, and Welfare, Reports and Memoranda.
   Volume(issue)/page/year: DHHS #92-100,1992

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 71095
       No. of Facilities: 28 (estimated)
       No. of Industries: 2
       No. of Occupations: 5
       No. of Employees: 597 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X2923
       No. of Facilities: 26 (estimated)
       No. of Industries: 1
       No. of Occupations: 3
       No. of Employees: 518 (estimated)
       No. of Female Employees: 155 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X4238
       No. of Facilities: 2 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 35 (estimated)
       No. of Female Employees: 21 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X5917
       No. of Facilities: 3 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 400 (estimated)
       No. of Female Employees: 400 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 71095
       No. of Facilities: 275 (estimated)
       No. of Industries: 13
       No. of Occupations: 13
       No. of Employees: 7063 (estimated)
       No. of Female Employees: 1255 (estimated)

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

 
                            *** END OF RECORD ***