*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : VI9069000
CHEMICAL NAME           : Rhodium
CAS REGISTRY NUMBER     : 7440-16-6
LAST UPDATED            : 199712
DATA ITEMS CITED        : 24
MOLECULAR FORMULA       : Rh
MOLECULAR WEIGHT        : 102.91
WISWESSER LINE NOTATION :  RH
SYNONYMS/TRADE NAMES :
   * RH
   * Rhodium, metal

                              *** REVIEWS ***
 
   ACGIH TLV-Not classifiable as a human carcinogen
   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

   ACGIH TLV-TWA 1 mg/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 ***
 
   OSHA PEL (Gen Indu):8H TWA 0.1 mg(Rh)/m3
   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 0.1 mg(Rh)/m3 (fume)
   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 0.1 mg(Rh)/m3,
   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 (Fed Cont):8H TWA 0.1 mg(Rh)/m3,fume and dust
   CFRGBR Code of Federal Regulations.  (U.S. Government Printing Office, Supt.
   of Documents, Washington, DC 20402)  Volume(issue)/page/year:
   41,50-204.50,1994

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-AUSTRALIA:TWA 1 mg/m3 JAN 1993
   
   OEL-BELGIUM:TWA 1 mg/m3 JAN 1993
   
   OEL-DENMARK:TWA 0.1 mg/m3 JAN 1993
   
   OEL-FINLAND:TWA 0.1 mg/m3 JAN 1993
   
   OEL-FRANCE:TWA 1 mg/m3 JAN 1993
   
   OEL-THE NETHERLANDS:TWA 0.1 mg/m3 JAN 1993
   
   OEL-THE PHILIPPINES:TWA 0.1 mg/m3 JAN 1993
   
   OEL-SWITZERLAND:TWA 0.1 mg/m3 JAN 1993
   
   OEL-UNITED KINGDOM:TWA 0.1 mg/m3;STEL 0.3 mg/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 RHODIUM (as Rh), soluble compds-air:10H TWA 0.001 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 RHODIUM (as Rh)-air:10H TWA 0.1 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 - 67405
       No. of Facilities: 201 (estimated)
       No. of Industries: 5
       No. of Occupations: 7
       No. of Employees: 3399 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 67405
       No. of Facilities: 1612 (estimated)
       No. of Industries: 17
       No. of Occupations: 27
       No. of Employees: 12004 (estimated)
       No. of Female Employees: 2078 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA Section 8(d) unpublished health/safety studies
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***