*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : UQ4900000
CHEMICAL NAME : Pyrazole
CAS REGISTRY NUMBER : 288-13-1
LAST UPDATED : 199803
DATA ITEMS CITED : 18
MOLECULAR FORMULA : C3-H4-N2
MOLECULAR WEIGHT : 68.09
WISWESSER LINE NOTATION : T5MNJ
COMPOUND DESCRIPTOR : Reproductive Effector
SYNONYMS/TRADE NAMES :
* 1,2-Diazole
* 1H-Pyrazole
*** 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 : 1010 mg/kg
TOXIC EFFECTS :
Behavioral - coma
Liver - hepatitis (hepatocellular necrosis), zonal
Liver - fatty liver degeneration
REFERENCE :
EXPEAM Experientia. (Birkhaeuser Verlag, POB 133, CH-4010 Basel,
Switzerland) V.1- 1945- Volume(issue)/page/year: 25,816,1969
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 900 mg/kg
TOXIC EFFECTS :
Tumorigenic - active as anti-cancer agent
REFERENCE :
JPMSAE Journal of Pharmaceutical Sciences. (American Pharmaceutical Assoc.,
2215 Constitution Ave., NW, Washington, DC 20037) V.50- 1961-
Volume(issue)/page/year: 57,537,1968
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1021 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EXPEAM Experientia. (Birkhaeuser Verlag, POB 133, CH-4010 Basel,
Switzerland) V.1- 1945- Volume(issue)/page/year: 28,1198,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 409 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EXPEAM Experientia. (Birkhaeuser Verlag, POB 133, CH-4010 Basel,
Switzerland) V.1- 1945- Volume(issue)/page/year: 28,1198,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 538 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
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: 178,199,1971
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 374 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
EXPEAM Experientia. (Birkhaeuser Verlag, POB 133, CH-4010 Basel,
Switzerland) V.1- 1945- Volume(issue)/page/year: 28,1198,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Mammal - dog
DOSE/DURATION : 175 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
INNDDK Investigational New Drugs. The Journal of New Anticancer Agents.
Kluwer Academic Pub., POB 358, Accord Stn., Hingham, MA 02018) V.1- 1983-
Volume(issue)/page/year: 6,305,1988
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1904 mg/kg/4W-I
TOXIC EFFECTS :
Endocrine - changes in thyroid weight
Blood - pigmented or nucleated red blood cells
Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
EXPEAM Experientia. (Birkhaeuser Verlag, POB 133, CH-4010 Basel,
Switzerland) V.1- 1945- Volume(issue)/page/year: 28,1198,1972
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 60 mg/kg/4D-I
TOXIC EFFECTS :
Brain and Coverings - other degenerative changes
Behavioral - fluid intake
Biochemical - Neurotransmitters or modulators (putative) - catecholamine
levels in sympathetic nerves
REFERENCE :
APTOA6 Acta Pharmacologica et Toxicologica. (Copenhagen, Denmark) V.1-59,
1945-86. For publisher information, see PHTOEH Volume(issue)/page/year:
39,513,1976
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Subcutaneous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 400 mg/kg/4D-I
TOXIC EFFECTS :
Liver - other changes
Liver - changes in liver weight
Biochemical - Enzyme inhibition, induction, or change in blood or tissue
levels - multiple enzyme effects
REFERENCE :
TXCYAC Toxicology. (Elsevier Scientific Pub. Ireland, Ltd., POB 85,
Limerick, Ireland) V.1- 1973- Volume(issue)/page/year: 8,251,1977
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 60 mg/kg/4D-I
TOXIC EFFECTS :
Brain and Coverings - other degenerative changes
Biochemical - Neurotransmitters or modulators (putative) - catecholamine
levels in sympathetic nerves
REFERENCE :
APTOA6 Acta Pharmacologica et Toxicologica. (Copenhagen, Denmark) V.1-59,
1945-86. For publisher information, see PHTOEH Volume(issue)/page/year:
39,513,1976
** REPRODUCTIVE DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 100 mg/kg
SEX/DURATION : female 9 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - eye/ear
Reproductive - Specific Developmental Abnormalities - urogenital system
REFERENCE :
RCOCB8 Research Communications in Chemical Pathology and Pharmacology. (PJD
Pub. Ltd., P.O. Box 966, Westbury, NY 11590) V.1- 1970-
Volume(issue)/page/year: 26,65,1979
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 100 mg/kg
SEX/DURATION : female 6 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
resorbed implants per total number of implants)
REFERENCE :
RCOCB8 Research Communications in Chemical Pathology and Pharmacology. (PJD
Pub. Ltd., P.O. Box 966, Westbury, NY 11590) V.1- 1970-
Volume(issue)/page/year: 26,65,1979
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE : 24 mg/kg
SEX/DURATION : female 8-14 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death,
e.g., stunted fetus)
Reproductive - Effects on Embryo or Fetus - fetal death
REFERENCE :
TJADAB Teratology, The International Journal of Abnormal Development. (Alan
R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.1- 1968-
Volume(issue)/page/year: 25(2),43A,1982
*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***
NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X5484
No. of Facilities: 25 (estimated)
No. of Industries: 1
No. of Occupations: 3
No. of Employees: 457 (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 ***