*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : VV7312000
CHEMICAL NAME           : Silica, amorphous-fume
CAS REGISTRY NUMBER     : 69012-64-2
LAST UPDATED            : 199712
DATA ITEMS CITED        : 5
SYNONYMS/TRADE NAMES :
   * Amorphous silica fume
   * Silica, amorphos-fume

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 2 mg/m3, respirable dust
   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

         *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 80542
       No. of Facilities: 1920 (estimated)
       No. of Industries: 47
       No. of Occupations: 38
       No. of Employees: 46852 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 80542
       No. of Facilities: 15637 (estimated)
       No. of Industries: 118
       No. of Occupations: 90
       No. of Employees: 210099 (estimated)
       No. of Female Employees: 26304 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***