*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : PA1490000
CHEMICAL NAME           : Methane
CAS REGISTRY NUMBER     : 74-82-8
BEILSTEIN REFERENCE NO. : 1718732
REFERENCE               : 4-01-00-00003 (Beilstein Handbook Reference)
LAST UPDATED            : 199712
DATA ITEMS CITED        : 17
MOLECULAR FORMULA       : C-H4
MOLECULAR WEIGHT        : 16.05
WISWESSER LINE NOTATION : 1H
SYNONYMS/TRADE NAMES :
   * Fire Damp
   * Marsh gas
   * Methane
   * Methyl hydride

                              *** REVIEWS ***
 
   ACGIH TLV-Simple asphyxiant, NO TWA
   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:ASPHYXIANTS/GASES
   DTLWS* "Documentation of the Threshold Limit Values for Substances in
   Workroom Air," Supplements. For publisher information, see 85INA8.
   Volume(issue)/page/year: 3,22,1973

   OSHA PEL (Construc):simple asphyxiant-inert gases and vapors
   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):Simple asphyxiant - inert gas  and vapor
   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:Asphyxiant JAN 1993
   
   OEL-BELGIUM:Asphyxiant JAN 1993
   
   OEL-HUNGARY:Asphyxiant JAN 1993
   
   OEL-THE NETHERLANDS:Asphyxiant JAN 1993
   
   OEL-SWITZERLAND:TWA 10000 ppm (6700 mg/m3) JAN 1993
   
   OEL-UNITED KINGDOM:Asphyxiant 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 OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - 45655
       No. of Facilities: 729 (estimated)
       No. of Industries: 28
       No. of Occupations: 41
       No. of Employees: 12323 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 45655
       No. of Facilities: 3141 (estimated)
       No. of Industries: 30
       No. of Occupations: 41
       No. of Employees: 65649 (estimated)
       No. of Female Employees: 2728 (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 ***