*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : GY2390000
CHEMICAL NAME           : Cyclopentane
CAS REGISTRY NUMBER     : 287-92-3
LAST UPDATED            : 199712
DATA ITEMS CITED        : 14
MOLECULAR FORMULA       : C5-H10
MOLECULAR WEIGHT        : 70.15
WISWESSER LINE NOTATION : L5TJ
SYNONYMS/TRADE NAMES :
   * Cyclopentane
   * Pentamethylene

                              *** REVIEWS ***
 
   ACGIH TLV-TWA 1720 mg/m3 (600 ppm)
   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

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-AUSTRALIA:TWA 600 ppm (1720 mg/m3) JAN 1993
   
   OEL-BELGIUM:TWA 600 ppm (1720 mg/m3) JAN 1993
   
   OEL-DENMARK:TWA 300 ppm (850 mg/m3) JAN 1993
   
   OEL-FRANCE:TWA 600 ppm (1720 mg/m3) JAN 1993
   
   OEL-THE NETHERLANDS:TWA 600 ppm (1720 mg/m3) JAN 1993
   
   OEL-SWITZERLAND:TWA 600 ppm (1720 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 CYCLOPENTANE-air:10H TWA 600 ppm
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 - 82935
       No. of Facilities: 8027 (estimated)
       No. of Industries: 77
       No. of Occupations: 52
       No. of Employees: 74753 (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   EPA TSCA Section 8(d) unpublished health/safety studies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 ***