*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : TB9605000
CHEMICAL NAME           : Phosphoric acid, dibutyl ester
CAS REGISTRY NUMBER     : 107-66-4
BEILSTEIN REFERENCE NO. : 0607224
REFERENCE               : 4-01-00-01530 (Beilstein Handbook Reference)
LAST UPDATED            : 199712
DATA ITEMS CITED        : 25
MOLECULAR FORMULA       : C8-H19-O4-P
MOLECULAR WEIGHT        : 210.24
WISWESSER LINE NOTATION : 4OPQO&O4
SYNONYMS/TRADE NAMES :
   * Dibutyl acid phosphate
   * Dibutyl hydrogen phosphate
   * Dibutyl phosphate
   * Di-n-butyl phosphate
   * Dibutyl phosphate
   * DP 4 (coupling agent)
   * HDBP

                              *** REVIEWS ***
 
   ACGIH TLV-STEL 17 mg/m3 (2 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

   ACGIH TLV-TWA 8.6 mg/m3 (1 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

                    *** U.S. STANDARDS AND REGULATIONS ***
 
   MSHA STANDARD-air:TWA 1 ppm (5 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: 3,75,1971

   OSHA PEL (Gen Indu):8H TWA 1 ppm (5 mg/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 1 ppm (5 mg/m3)
   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 1 ppm (5 mg/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 1 ppm (5 mg/m3)
   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 ppm (5 mg/m3);STEL 2 ppm (10 mg/m3) JAN 1993
   
   OEL-BELGIUM:TWA 1 ppm (8.8 mg/m3);STEL 2 ppm (17 mg/m3) JAN 1993
   
   OEL-DENMARK:TWA 1 ppm (5 mg/m3) JAN 1993
   
   OEL-FINLAND:TWA 1 ppm (8 mg/m3);STEL 3 ppm (24 mg/m3);Skin JAN 1993
   
   OEL-FRANCE:TWA 1 ppm (5 mg/m3) JAN 1993
   
   OEL-THE NETHERLANDS:TWA 1 ppm (5 mg/m3) JAN 1993
   
   OEL-THE PHILIPPINES:TWA 1 ppm (5 mg/m3) JAN 1993
   
   OEL-SWITZERLAND:TWA 1 ppm (8.5 mg/m3) JAN 1993
   
   OEL-UNITED KINGDOM:TWA 1 ppm (5 mg/m3);STEL 2 ppm (10 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 DIBUTYL PHOSPHATE-air:10H TWA 1 ppm;STEL 2 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 - 23865
       No. of Facilities: 13 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 13 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 23865
       No. of Facilities: 76 (estimated)
       No. of Industries: 2
       No. of Occupations: 2
       No. of Employees: 1321 (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
   
   NIOSH Analytical Method, 1994: Dibutyl phosphate, 5017

 
                            *** END OF RECORD ***