*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : VW3300000
CHEMICAL NAME           : Siloxanes and silicones, di-Me, vinyl
                          group-terminated
CAS REGISTRY NUMBER     : 68083-19-2
LAST UPDATED            : 199710
DATA ITEMS CITED        : 5
SYNONYMS/TRADE NAMES :
   * Dow corning 6646
   * Dow corning 3-4939
   * GE 3175
   * PS 441
   * PS 442
   * PS 448
   * Sylgard 170A
   * Vinyl dimethylsiloxy-terminated polydimethylsiloxane
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : >16 mL/kg
TOXIC EFFECTS :
   Lungs, Thorax, or Respiration - fibrosis, focal (pneumoconiosis)
   Lungs, Thorax, or Respiration - other changes
REFERENCE :
   ATDAEI Acute Toxicity Data. Journal of the American College of Toxicology,
   Part B. (Mary Ann Liebert, Inc., 1651 Third Ave., New York, NY 10128)  V.1-
   1990-  Volume(issue)/page/year: 12,591,1993
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : >16 mL/kg
TOXIC EFFECTS :
   Skin and Appendages - dermatitis, other (after systemic exposure)
REFERENCE :
   ATDAEI Acute Toxicity Data. Journal of the American College of Toxicology,
   Part B. (Mary Ann Liebert, Inc., 1651 Third Ave., New York, NY 10128)  V.1-
   1990-  Volume(issue)/page/year: 12,591,1993

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - E0744
       No. of Facilities: 692 (estimated)
       No. of Industries: 15
       No. of Occupations: 34
       No. of Employees: 13152 (estimated)
       No. of Female Employees: 3239 (estimated)

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

 
                            *** END OF RECORD ***