*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : QA4681000
CHEMICAL NAME           : Molybdenum boride
CAS REGISTRY NUMBER     : 12007-97-5
LAST UPDATED            : 199712
DATA ITEMS CITED        : 24
MOLECULAR FORMULA       : B5-Mo2
MOLECULAR WEIGHT        : 245.93
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intratracheal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 125 mg/kg
TOXIC EFFECTS :
   Liver - other changes
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: 9(6),40,1965
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 1377 mg/kg
TOXIC EFFECTS :
   Liver - other changes
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: 9(6),40,1965
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 1380 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   85AEA9 "Environmental Hazards of Metals," Brakhnova, I.T., translated by
   J.H. Slep, New York, Consultants Bureau, 1975  Volume(issue)/page/year:
   -,115,1975

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 10 mg(Mo)/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 10 mg(Mo)/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:
   3,173,1971

   OSHA PEL (Gen Indu):8H TWA 15 mg(Mo)/m3, total dust
   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 15 mg(Mo)/m3, total dust
   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 15 mg(Mo)/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 15 mg(Mo)/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 10 mg(Mo)/m3 JAN 1993
   
   OEL-BELGIUM:TWA 10 mg(Mo)/m3 JAN 1993
   
   OEL-DENMARK:TWA 10 mg(Mo)/m3 JAN 1993
   
   OEL-FRANCE:TWA 5 mg(Mo)/m3;STEL 10 mg(Mo)/m3 JAN 1993
   
   OEL-GERMANY:TWA 15 mg(Mo)/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 10 mg(Mo)/m3 JAN 1993
   
   OEL-THE PHILIPPINES:TWA 15 mg(Mo)/m3 JAN 1993
   
   OEL-SWEDEN:TWA 10 mg(Mo)/m3 (total dust) JAN 1993
   
   OEL-SWEDEN:TWA 5 mg(Mo)/m3 (resp. dust) JAN 1993
   
   OEL-SWITZERLAND:TWA 10 mg(Mo)/m3 JAN 1993
   
   OEL-TURKEY:TWA 15 mg(Mo)/m3 JAN 1993
   
   OEL-UNITED KINGDOM:TWA 10 mg(Mo)/m3;STEL 20 mg(Mo)/m3 JAN 1993
   
   OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
   
   OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY

 
                            *** END OF RECORD ***