*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : VV9150000
CHEMICAL NAME           : Silicic acid, calcium salt
CAS REGISTRY NUMBER     : 1344-95-2
OTHER CAS REGISTRY NOS. : 59787-14-3
LAST UPDATED            : 199712
DATA ITEMS CITED        : 17
SYNONYMS/TRADE NAMES :
   * Calcium hydrosilicate
   * Calcium monosilicate
   * Calcium polysilicate
   * Calcium silicate, synthetic nonfibrous
   * Calcium silicate
   * Calflo E
   * Calsil
   * CS lafarge
   * Florite R
   * Marimet 45
   * Microcal 160
   * Microcal ET
   * Micro-cel
   * Micro-cel A
   * Micro-cel B
   * Micro-cel C
   * Micro-cel E
   * Micro-cel T
   * Micro-cel T26
   * Micro-cel T38
   * Micro-cel T41
   * Promaxon P60
   * Silene EF
   * Silmos T
   * Solex
   * Stabinex NW 7PS
   * Starlex L
   * SW 400
   * Toyofine A

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 10 mg/m3, inhalable 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

                    *** U.S. STANDARDS AND REGULATIONS ***
 
   OSHA PEL (Gen Indu):8H TWA 15 mg/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 (Gen Indu):8H TWA 5 mg/m3, respirable fraction
   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/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 (Construc):8H TWA 5 mg/m3, respirable fraction
   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/m3, total dust
   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 (Shipyard):8H TWA 5 mg/m3, respirable fraction
   CFRGBR Code of Federal Regulations.  (U.S. Government Printing Office, Supt.
   of Documents, Washington, DC 20402)  Volume(issue)/page/year:
   29,1915.1000,1993

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-AUSTRALIA:TWA 10 mg/m3 JAN 1993
   
   OEL-BELGIUM:TWA 10 mg/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 6 mg/m3 (resp. dust) JAN 1993
   
   OEL-UNITED KINGDOM:TWA 5 mg/m3 (resp. dust) 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 CALCIUM SILICATE, respirable fraction-air:TWA 5 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 RECOMMENDED EXPOSURE LEVEL (REL) :
   NIOSH REL TO CALCIUM SILICATE, total dust-air:10H TWA 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 :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X1322
       No. of Facilities: 6757 (estimated)
       No. of Industries: 83
       No. of Occupations: 65
       No. of Employees: 103864 (estimated)
       No. of Female Employees: 16592 (estimated)

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

 
                            *** END OF RECORD ***