*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : GB6260000
CHEMICAL NAME           : Chromium, ion (Cr 2+)
CAS REGISTRY NUMBER     : 22541-79-3
LAST UPDATED            : 199712
DATA ITEMS CITED        : 8
MOLECULAR FORMULA       : Cr
MOLECULAR WEIGHT        : 52.00
COMPOUND DESCRIPTOR     : Mutagen
SYNONYMS/TRADE NAMES :
   * Chromium (2+)
   * Chromium (II)
   * Chromium (2+) ion
   * Chromous ion
 
                       *** HEALTH HAZARD DATA ***
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : DNA adduct
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 5 umol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 89,95,1981
 
TYPE OF TEST            : DNA adduct
TEST SYSTEM             : Rodent - mouse Ascites tumor
DOSE/DURATION           : 5 umol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 89,95,1981

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 0.5 mg(Cr)/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

   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

                    *** U.S. STANDARDS AND REGULATIONS ***
 
   MSHA STANDARD-air:TWA 1 mg(Cr)/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: 3,35,1971

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

NIOSH RECOMMENDED EXPOSURE LEVEL (REL) :
   NIOSH REL TO CHROMIUM(II) COMPOUNDS-air:10H TWA 0.5 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

                          *** STATUS IN U.S. ***
 
   NIOSH Analytical Method, 1994: Chromium and compounds as Co, 7024
   
   NIOSH Analytical Method, 1994: Elements by ICP, 7300

 
                            *** END OF RECORD ***