*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : PA7350000
CHEMICAL NAME : Methane, dibromo-
CAS REGISTRY NUMBER : 74-95-3
BEILSTEIN REFERENCE NO. : 0969143
REFERENCE : 4-01-00-00078 (Beilstein Handbook Reference)
LAST UPDATED : 199710
DATA ITEMS CITED : 16
MOLECULAR FORMULA : C-H2-Br2
MOLECULAR WEIGHT : 173.85
WISWESSER LINE NOTATION : E1E
COMPOUND DESCRIPTOR : Mutagen
SYNONYMS/TRADE NAMES :
* Methylene bromide
* Methylene dibromide
* RCRA waste number U068
*** 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 : 108 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161)
Formerly U.S. Clearinghouse for Scientific & Technical Information.
Volume(issue)/page/year: PB85-143766
TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 40 gm/m3/2H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85GMAT "Toxicometric Parameters of Industrial Toxic Chemicals Under Single
Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects,
GKNT, 1982 Volume(issue)/page/year: -,83,1982
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 3738 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E.
First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year:
4,354,1962
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
DOWCC* Dow Chemical Company Reports. (Dow Chemical USA, Health and
Environment Research, Toxicology Research Lab., Midland, MI 48640)
Volume(issue)/page/year: MSD-472
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : >4 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
DOWCC* Dow Chemical Company Reports. (Dow Chemical USA, Health and
Environment Research, Toxicology Research Lab., Midland, MI 48640)
Volume(issue)/page/year: MSD-472
TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Rectal
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 5 gm/kg
TOXIC EFFECTS :
Behavioral - convulsions or effect on seizure threshold
Lungs, Thorax, or Respiration - respiratory stimulation
Gastrointestinal - changes in structure or function of salivary glands
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams &
Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10-
Volume(issue)/page/year: 34,223,1928
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 333 mg/kg/28D-C
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol)
Biochemical - Enzyme inhibition, induction, or change in blood or tissue
levels - dehydrogenases
REFERENCE :
BECTA6 Bulletin of Environmental Contamination and Toxicology.
(Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ
07094) V.1- 1966- Volume(issue)/page/year: 41,515,1988
** MUTATION DATA **
TYPE OF TEST : Mutation in microorganisms
TEST SYSTEM : Bacteria - Salmonella typhimurium
DOSE/DURATION : 100 ng/plate
REFERENCE :
BECTA6 Bulletin of Environmental Contamination and Toxicology.
(Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ
07094) V.1- 1966- Volume(issue)/page/year: 24,590,1980
TYPE OF TEST : Mutation in microorganisms
TEST SYSTEM : Bacteria - Salmonella typhimurium
DOSE/DURATION : 10 ug/plate
REFERENCE :
TECSDY Toxicological and Environmental Chemistry. (Gordon & Breach Science
Pub. Inc., 1 Park Ave., New York, NY 10016) V.3(3/4)- 1981-
Volume(issue)/page/year: 13,205,1987
TYPE OF TEST : Cytogenetic analysis
TEST SYSTEM : Rodent - hamster Lung
DOSE/DURATION : 1 umol/L
REFERENCE :
TECSDY Toxicological and Environmental Chemistry. (Gordon & Breach Science
Pub. Inc., 1 Park Ave., New York, NY 10016) V.3(3/4)- 1981-
Volume(issue)/page/year: 13,205,1987
*** OCCUPATIONAL EXPOSURE LIMITS ***
OEL-RUSSIA:STEL 10 mg/m3 JAN 1993
*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***
NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X4051
No. of Facilities: 33 (estimated)
No. of Industries: 2
No. of Occupations: 2
No. of Employees: 1065 (estimated)
No. of Female Employees: 452 (estimated)
*** STATUS IN U.S. ***
EPA TSCA Section 8(b) CHEMICAL INVENTORY
EPA TSCA Section 8(d) unpublished health/safety studies
On EPA IRIS database
EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998
*** END OF RECORD ***