*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : JM9237000
CHEMICAL NAME           : Disiloxane, hexamethyl-
CAS REGISTRY NUMBER     : 107-46-0
LAST UPDATED            : 199710
DATA ITEMS CITED        : 9
MOLECULAR FORMULA       : C6-H18-O-Si2
MOLECULAR WEIGHT        : 162.42
WISWESSER LINE NOTATION : 1-SI-1&1&O-SI-1&1&1
COMPOUND DESCRIPTOR     : Primary Irritant
SYNONYMS/TRADE NAMES :
   * Bis(trimethylsilyl)ether
   * Bis(trimethylsilyl)oxide
   * Hexamethyldisiloxane
   * Oxybis(trimethylsilane)
   * Silane, oxybis(trimethyl-
   * SWS-F 221
 
                       *** HEALTH HAZARD DATA ***
 
                      ** SKIN/EYE IRRITATION DATA **
 
TYPE OF TEST            : Standard Draize test
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 500 mg/24H
REACTION SEVERITY       : Mild
REFERENCE :
   85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J.,
   Prague, Czechoslovakia, Avicenum, 1986  Volume(issue)/page/year: -,1225,1986
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 8 mL/kg
TOXIC EFFECTS :
   Behavioral - altered sleep time (including change in righting reflex)
   Behavioral - somnolence (general depressed activity)
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: 12,590,1993
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 4500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   RCRVAB Russian Chemical Reviws (English Translation).  Translation of
   USKHAB.  (Royal Soc. of Chemistry, Distribution Centre, Blackhorse Rd.,
   Letchworth, Herts SG6 1HN, UK) V.29-    1960-  Volume(issue)/page/year:
   38,975,1969
 
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 :
   Peripheral Nerve and Sensation - flaccid paralysis with appropriate
   anesthesia
   Behavioral - altered sleep time (including change in righting reflex)
   Behavioral - somnolence (general depressed activity)
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: 12,590,1993
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - guinea pig
DOSE/DURATION           : 50 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   JIHTAB Journal of Industrial Hygiene and Toxicology.  (Cambridge, MA)
   V.18-31, 1936-49.  For publisher information, see AEHLAU.
   Volume(issue)/page/year: 30,332,1948

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X5873
       No. of Facilities: 1013 (estimated)
       No. of Industries: 28
       No. of Occupations: 23
       No. of Employees: 16273 (estimated)
       No. of Female Employees: 986 (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 ***