*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : VV8225000
CHEMICAL NAME           : Silicate(2-), hexafluoro-, dihydrogen
CAS REGISTRY NUMBER     : 16961-83-4
OTHER CAS REGISTRY NOS. : 1309-45-1
LAST UPDATED            : 199710
DATA ITEMS CITED        : 11
MOLECULAR FORMULA       : F6-Si.2H
MOLECULAR WEIGHT        : 144.11
WISWESSER LINE NOTATION :   H2 SI-F6
SYNONYMS/TRADE NAMES :
   * Acide fluorosilicique
   * Acide fluosilicique
   * Acido fluosilicico
   * Dihydrogen hexafluorosilicate (2-)
   * FKS
   * Fluosilicic acid
   * Hexafluorokieselsaiure
   * Hexafluorokiezelzuur
   * Hexafluosilicic acid
   * Hydrofluosilicic acid
   * Hydrogen hexafluorosilicate
   * Hydrosilicofluoric acid
   * Kiezelfluorwaterstofzuur
   * Sand acid
   * Silicofluoric acid
   * Silicon hexafluoride dihydride
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Subcutaneous
SPECIES OBSERVED        : Amphibian - frog
DOSE/DURATION           : 140 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   CRSBAW Comptes Rendus des Seances de la Societe de Biologie et de Ses
   Filiales.  (SPPIF, B.P.22, F-41353 Vineuil, France)  V.1-    1849-
   Volume(issue)/page/year: 124,133,1937

                              *** REVIEWS ***
 
   TOXICOLOGY REVIEW
   AMSSAQ Acta Medica Scandinavica, Supplement.  (Almqvist & Wiksell, POB
   45150, S-10430 Stockholm, Sweden)  No.1-730, 1921-88.
   Volume(issue)/page/year: 400,5,1963

                    *** U.S. STANDARDS AND REGULATIONS ***
 
   OSHA PEL (Gen Indu):8H TWA 2.5 mg(F)/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 2.5 mg(F)/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 2.5 mg(F)/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 2.5 mg(F)/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

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

NIOSH RECOMMENDED EXPOSURE LEVEL (REL) :
   NIOSH REL TO FLUORIDES, INORGANIC-air:10H TWA 2.5 mg(F)/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 - 81843
       No. of Facilities: 142 (estimated)
       No. of Industries: 7
       No. of Occupations: 14
       No. of Employees: 775 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - 81843
       No. of Facilities: 1758 (estimated)
       No. of Industries: 19
       No. of Occupations: 15
       No. of Employees: 10867 (estimated)
       No. of Female Employees: 2068 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***