*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : JM9230000
CHEMICAL NAME : Disilazane, 1,1,1,3,3,3-hexamethyl-
CAS REGISTRY NUMBER : 999-97-3
LAST UPDATED : 199710
DATA ITEMS CITED : 17
MOLECULAR FORMULA : C6-H19-N-Si2
MOLECULAR WEIGHT : 161.44
WISWESSER LINE NOTATION : 1-SI-1&1&M-SI-1&1&1
COMPOUND DESCRIPTOR : Tumorigen
Primary Irritant
SYNONYMS/TRADE NAMES :
* Bis(trimethylsilyl)amine
* Hexamethyldisilazane
* 1,1,1,3,3,3-Hexamethyldisilazane
* HMDS
* OAP
* Silanamine, 1,1,1-trimethyl-N-(trimethylsilyl)-
* SZ 6079
* 1,1,1-Trimethyl-N-(trimethylsilyl)silanamine
* Tri-Sil
* TSL 8802
*** 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 uL
REACTION SEVERITY : Severe
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161)
Formerly U.S. Clearinghouse for Scientific & Technical Information.
Volume(issue)/page/year: OTS0533941
** ACUTE TOXICITY DATA **
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 850 mg/kg
TOXIC EFFECTS :
Behavioral - general anesthetic
Cardiac - pulse rate
Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and
Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
V.1-36, 1957-1992. For publisher information, see MTPEEI
Volume(issue)/page/year: 30(5),52,1986
TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 8700 mg/m3/4H
TOXIC EFFECTS :
Behavioral - general anesthetic
Cardiac - pulse rate
Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and
Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
V.1-36, 1957-1992. For publisher information, see MTPEEI
Volume(issue)/page/year: 30(5),52,1986
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 800 mg/kg
TOXIC EFFECTS :
Behavioral - tremor
Behavioral - muscle weakness
Skin and Appendages - hair
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161)
Formerly U.S. Clearinghouse for Scientific & Technical Information.
Volume(issue)/page/year: OTS0537734
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 850 mg/kg
TOXIC EFFECTS :
Behavioral - general anesthetic
Cardiac - pulse rate
Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and
Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
V.1-36, 1957-1992. For publisher information, see MTPEEI
Volume(issue)/page/year: 30(5),52,1986
TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 12 gm/m3/2H
TOXIC EFFECTS :
Behavioral - general anesthetic
Cardiac - pulse rate
Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and
Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
V.1-36, 1957-1992. For publisher information, see MTPEEI
Volume(issue)/page/year: 30(5),52,1986
TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 650 mg/kg
TOXIC EFFECTS :
Immunological Including Allergic - decreased immune response
REFERENCE :
StoGD# Personal Communication from G.D. Stoner, Dept. of Community Medicine,
School of Medicine, Univ. of California, La Jolla, CA 92037, May 25, 1975
Volume(issue)/page/year: 27MAY1975
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : >100 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
IAEC** Interagency Collaborative Group on Environmental Carcinogenesis,
National Cancer Institute, Memorandum, June 17, 1974
Volume(issue)/page/year: 17JUN1974
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 1100 mg/kg
TOXIC EFFECTS :
Behavioral - general anesthetic
Cardiac - pulse rate
Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and
Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
V.1-36, 1957-1992. For publisher information, see MTPEEI
Volume(issue)/page/year: 30(5),52,1986
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 710 uL/kg
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity)
Lungs, Thorax, or Respiration - other changes
Gastrointestinal - 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: 12,576,1993
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - guinea pig
DOSE/DURATION : 1 mL/kg
TOXIC EFFECTS :
Behavioral - tremor
Behavioral - muscle weakness
Skin and Appendages - hair
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161)
Formerly U.S. Clearinghouse for Scientific & Technical Information.
Volume(issue)/page/year: OTS0537734
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 98 mg/m3/4H/17W-I
TOXIC EFFECTS :
Brain and Coverings - recordings from specific areas of CNS
Liver - liver function tests impaired
REFERENCE :
GTPZAB Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and
Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
V.1-36, 1957-1992. For publisher information, see MTPEEI
Volume(issue)/page/year: 30(5),52,1986
** TUMORIGENIC DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1 gm/kg/I
TOXIC EFFECTS :
Tumorigenic - equivocal tumorigenic agent by RTECS criteria
Lungs, Thorax, or Respiration - tumors
REFERENCE :
JNCIAM Journal of the National Cancer Institute. (Washington, DC) V.1-60,
1940-78. For publisher information, see JJIND8. Volume(issue)/page/year:
54,495,1975
*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***
NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X4131
No. of Facilities: 220 (estimated)
No. of Industries: 10
No. of Occupations: 22
No. of Employees: 30908 (estimated)
No. of Female Employees: 4223 (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 ***