*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : BS0480000
CHEMICAL NAME           : Ammonium paratungstate hexahydrate
CAS REGISTRY NUMBER     : 12208-54-7
LAST UPDATED            : 199712
DATA ITEMS CITED        : 15
MOLECULAR FORMULA       : H24-N6-O24-W7.6H2-O
MOLECULAR WEIGHT        : 1887.37
 
                       *** 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           : 11300 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   AIHAAP American Industrial Hygiene Association Journal.  (AIHA, 475 Wolf
   Ledges Pkwy., Akron, OH 44311)  V.19-    1958-  Volume(issue)/page/year:
   30,470,1969

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 1 mg(W)/m3; STEL 3 mg(W)/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 1 mg(W)/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:
   3,272,1971

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-AUSTRALIA:TWA 1 mg(W)/m3;STEL 3 mg(W)/m3 JAN 1993
   
   OEL-BELGIUM:TWA 1 mg(W)/m3;STEL 3 mg(W)/m3 JAN 1993
   
   OEL-DENMARK:TWA 1 mg(W)/m3 JAN 1993
   
   OEL-FINLAND:TWA 1 mg(W)/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 1 mg(W)/m3 JAN 1993
   
   OEL-THE PHILIPPINES:TWA 3 mg(W)/m3 JAN 1993
   
   OEL-SWEDEN:TWA 1 mg(W)/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 1 mg(W)/m3 JAN 1993
   
   OEL-UNITED KINGDOM:TWA 1 mg(W)/m3;STEL 3 mg(W)/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 TUNGSTEN, soluble-air:10H TWA 1 mg(W)/m3;STEL 3 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

 
                            *** END OF RECORD ***