*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : TH5650000
CHEMICAL NAME           : Phosphotungstic acid
CAS REGISTRY NUMBER     : 12067-99-1
LAST UPDATED            : 199701
DATA ITEMS CITED        : 5
WISWESSER LINE NOTATION : .WO..O3 24 &..H3.P-O4 2 &QH48
SYNONYMS/TRADE NAMES :
   * Tungsten hydroxide oxide
   * Tungstophosphoric acid
 
                       *** 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           : 3300 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   TXAPA9 Toxicology and Applied Pharmacology.  (Academic Press, Inc., 1 E.
   First St., Duluth, MN 55802) V.1-    1959-  Volume(issue)/page/year:
   42,417,1977

         *** 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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 81065
       No. of Facilities: 867 (estimated)
       No. of Industries: 7
       No. of Occupations: 8
       No. of Employees: 8320 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 81065
       No. of Facilities: 1413 (estimated)
       No. of Industries: 5
       No. of Occupations: 14
       No. of Employees: 26369 (estimated)
       No. of Female Employees: 19198 (estimated)

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

 
                            *** END OF RECORD ***