*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : DE1050000 CHEMICAL NAME : 2-Benzimidazolethiol CAS REGISTRY NUMBER : 583-39-1 OTHER CAS REGISTRY NOS. : 2080-59-3 LAST UPDATED : 199701 DATA ITEMS CITED : 12 MOLECULAR FORMULA : C7-H6-N2-S MOLECULAR WEIGHT : 150.21 WISWESSER LINE NOTATION : T56 BM DNJ CSH COMPOUND DESCRIPTOR : Drug Reproductive Effector Primary Irritant SYNONYMS/TRADE NAMES : * Antiegene MB * Antioxidant MB * AOMB * ASM MB * 2-Benzimidazolinthion * 2-Mercaptobenzimidazole * Mercaptobenzoimidazole * 2-Mercaptobenzoimidazole * Merkaptobenzimidazol * 2-Merkaptobenzimidazol * NCI-C60980 * o-Phenylenethiourea * USAF EK-6540 * USAF XF-21 *** 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: -,990,1986 TYPE OF TEST : Standard Draize test ROUTE OF EXPOSURE : Administration into the eye 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: -,990,1986 ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 750 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : FRZKAP Farmatsevtichnii Zhurnal (Kiev). (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.3- 1930- Volume(issue)/page/year: 17(1),36,1962 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intraperitoneal SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 200 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: AD277-689 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Intravenous SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 180 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#04376 ** OTHER MULTIPLE DOSE TOXICITY DATA ** TYPE OF TEST : TCLo - Lowest published toxic concentration ROUTE OF EXPOSURE : Inhalation SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 6200 ug/m3/6H/13W-I TOXIC EFFECTS : Endocrine - changes in thymus weight Endocrine - changes in thyroid weight Blood - changes in erythrocyte (RBC) count REFERENCE : FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 16,161,1991 TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rabbit DOSE/DURATION : 1820 mg/kg/17W-I TOXIC EFFECTS : Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) 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: 8(7),39,1964 ** REPRODUCTIVE DATA ** TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE : 660 mg/kg SEX/DURATION : female 7-17 day(s) after conception TOXIC EFFECTS : Reproductive - Maternal Effects - other effects REFERENCE : FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 25,218,1995 TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE : 110 mg/kg SEX/DURATION : female 7-17 day(s) after conception TOXIC EFFECTS : Reproductive - Maternal Effects - other effects Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system REFERENCE : FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 25,218,1995 TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE : 330 mg/kg SEX/DURATION : female 7-17 day(s) after conception TOXIC EFFECTS : Reproductive - Specific Developmental Abnormalities - craniofacial (including nose and tongue) Reproductive - Specific Developmental Abnormalities - urogenital system REFERENCE : FAATDF Fundamental and Applied Toxicology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1981- Volume(issue)/page/year: 25,218,1995 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2477 No. of Facilities: 43 (estimated) No. of Industries: 3 No. of Occupations: 5 No. of Employees: 304 (estimated) No. of Female Employees: 67 (estimated) *** STATUS IN U.S. *** EPA TSCA Section 8(b) CHEMICAL INVENTORY *** END OF RECORD ***