*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : EV9580000
CHEMICAL NAME           : Calcium carbonate
CAS REGISTRY NUMBER     : 1317-65-3
LAST UPDATED            : 199712
DATA ITEMS CITED        : 29
WISWESSER LINE NOTATION :  CA  C-O3
SYNONYMS/TRADE NAMES :
   * Agricultural limestone
   * Agstone
   * Bell mine pulverized limestone
   * Calcium carbonate
   * Chalk
   * Domolite
   * Franklin
   * Limestone
   * Lithograpic stone
   * Marble
   * Natural calcium carbonate
   * Portland stone
   * Sohnhofen stone

                              *** 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 ***
 
   MSHA STANDARD:NUISANCE PARTICULATES
   DTLWS* "Documentation of the Threshold Limit Values for Substances in
   Workroom Air," Supplements. For publisher information, see 85INA8.
   Volume(issue)/page/year: 3,12,1973

   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-FRANCE:TWA 10 mg/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 10 mg/m3 JAN 1993
   
   OEL-RUSSIA:STEL 6 mg/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 6 mg/m3 (resp. dust) JAN 1993
   
   OEL-UNITED KINGDOM:TWA 10 mg/m3 (total 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 CARBONATE, 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 RECOMMENDED EXPOSURE LEVEL (REL) :
   NIOSH REL TO CALCIUM CARBONATE, respirable-air:10H 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 LIMESTONE, respirable fraction-air:10H 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 LIMESTONE, 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 RECOMMENDED EXPOSURE LEVEL (REL) :
   NIOSH REL TO MARBLE, respirable fraction-air:10H 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 MARBLE, 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 :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - M1525
       No. of Facilities: 9388 (estimated)
       No. of Industries: 76
       No. of Occupations: 85
       No. of Employees: 135016 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - M1525
       No. of Facilities: 31577 (estimated)
       No. of Industries: 164
       No. of Occupations: 138
       No. of Employees: 533341 (estimated)
       No. of Female Employees: 36245 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X3265
       No. of Facilities: 4765 (estimated)
       No. of Industries: 51
       No. of Occupations: 57
       No. of Employees: 79861 (estimated)
       No. of Female Employees: 4247 (estimated)

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

 
                            *** END OF RECORD ***