*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : CQ8370000
CHEMICAL NAME           : Barium
CAS REGISTRY NUMBER     : 7440-39-3
LAST UPDATED            : 199712
DATA ITEMS CITED        : 32
MOLECULAR FORMULA       : Ba
MOLECULAR WEIGHT        : 137.34
WISWESSER LINE NOTATION : .BA
SYNONYMS/TRADE NAMES :
   * Barium
 
                       *** HEALTH HAZARD DATA ***
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 26622 mg/kg/69W-C
TOXIC EFFECTS :
   Vascular - BP elevation not characterized in autonomic section
   Biochemical - Enzyme inhibition, induction, or change in blood or tissue
   levels - cytochrome oxidases (including oxidative phosphorylation)
   Biochemical - Metabolism (Intermediary) - xanthine, purine or nucleotides
   including urate
REFERENCE :
   JTEHD6 Journal of Toxicology and Environmental Health.  (Hemisphere Pub.,
   1025 Vermont Ave., NW, Washington, DC 20005)  V.1-    1975/76-
   Volume(issue)/page/year: 28,373,1989

                              *** REVIEWS ***
 
   ACGIH TLV-Not classifiable as a human carcinogen
   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

   ACGIH TLV-TWA 0.5 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 0.5 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: 3,21,1971

   OSHA PEL (Gen Indu):8H TWA 0.5 mg(Ba)/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 0.5 mg(Ba)/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 0.5 mg(Ba)/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 0.5 mg(Ba)/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-AUSTRALIA:TWA 0.5 mg/m3 JAN 1993
   
   OEL-AUSTRIA:TWA 0.5 mg/m3 JAN 1993
   
   OEL-BELGIUM:TWA 0.5 mg/m3 JAN 1993
   
   OEL-DENMARK:TWA 0.5 mg/m3 JAN 1993
   
   OEL-FINLAND:TWA 0.5 mg/m3 JAN 1993
   
   OEL-GERMANY:TWA 0.5 mg/m3 (total dust) JAN 1993
   
   OEL-HUNGARY:STEL 0.5 mg/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 0.5 mg/m3 JAN 1993
   
   OEL-THE PHILIPPINES:TWA 0.5 mg/m3 JAN 1993
   
   OEL-POLAND:TWA 0.5 mg/m3;STEL 1.5 mg/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 0.5 mg/m3;STEL 1 mg/m3 JAN 1993
   
   OEL-TURKEY:TWA 0.5 mg/m3 JAN 1993
   
   OEL-UNITED KINGDOM:TWA 0.5 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 BARIUM, soluble compounds-air:10H TWA 0.5 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 - 08625
       No. of Facilities: 657 (estimated)
       No. of Industries: 13
       No. of Occupations: 31
       No. of Employees: 6101 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 08625
       No. of Facilities: 901 (estimated)
       No. of Industries: 15
       No. of Occupations: 64
       No. of Employees: 10394 (estimated)
       No. of Female Employees: 3598 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA Section 8(d) unpublished health/safety studies
   
   On EPA IRIS database
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998
   
   NIOSH Analytical Method, 1994: Barium, soluble compounds, 7056
   
   NIOSH Analytical Method, 1994: Metals in urine, 8310

 
                            *** END OF RECORD ***