*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : YO7760000
CHEMICAL NAME           : Tungsten oxide
CAS REGISTRY NUMBER     : 1314-35-8
LAST UPDATED            : 199712
DATA ITEMS CITED        : 19
MOLECULAR FORMULA       : O3-W
MOLECULAR WEIGHT        : 231.85
WISWESSER LINE NOTATION : .WO..O3
SYNONYMS/TRADE NAMES :
   * C.I. 77901
   * Tungsten Blue
   * Tungsten trioxide
   * Tungstic acid
   * Tungstic anhydride
   * Tungstic oxide
 
                       *** 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           : 1059 mg/kg
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Behavioral - excitement
   Behavioral - muscle weakness
REFERENCE :
   HYSAAV Hygiene and Sanitation (USSR).  English translation of GISAAA.
   (Springfield, VA)  1964-71. Discontinued.  Volume(issue)/page/year:
   31(7-9),197,1966
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Unreported
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 2 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 48(7),71,1983
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 490 ug/m3/24H/15W-C
TOXIC EFFECTS :
   Liver - liver function tests impaired
   Blood - changes in leukocyte (WBC) count
   Biochemical - Enzyme inhibition, induction, or change in blood or tissue
   levels - true cholinesterase
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 48(7),71,1983

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 5 mg(W)/m3; STEL 10 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 5 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 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993
   
   OEL-BELGIUM:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993
   
   OEL-DENMARK:TWA 5 mg(W)/m3 JAN 1993
   
   OEL-FINLAND:TWA 5 mg(W)/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 5 mg(W)/m3 JAN 1993
   
   OEL-THE PHILIPPINES:TWA 1 mg(W)/m3 JAN 1993
   
   OEL-SWEDEN:TWA 5 mg(W)/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 5 mg(W)/m3 JAN 1993
   
   OEL-UNITED KINGDOM:TWA 5 mg(W)/m3;STEL 10 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, insoluble-air:TWA 5 mg(W)/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 - 84213
       No. of Facilities: 21 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 21 (estimated)

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

 
                            *** END OF RECORD ***