1,3,4-Metheno-2H-cyclobuta[cd]pentalen-2-one,1,1a,3,3a,4,5,5,5a,5b,6-decachlorooctahydro-

MOLECULAR FORMULA :

C10-Cl10-O

MOLECULAR WEIGHT :

490.60

WISWESSER LINE NOTATION :

L545 BH C5 D 4ABCE J DVTJ AG BG CG EG FG GG HG HG IG JG

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 :

91300 ug/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

>2 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

250 mg/kg

TOXIC EFFECTS :

Behavioral - tremor

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

65 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

345 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Bird - quail

DOSE/DURATION :

237 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Unreported

SPECIES OBSERVED :

Mammal - species unspecified

DOSE/DURATION :

126 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

307 mg/kg/15W-I

TOXIC EFFECTS :

Behavioral - alteration of operant conditioning Nutritional and Gross Metabolic - weight loss or decreased weight gain Nutritional and Gross Metabolic - body temperature increase

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

912 mg/kg/2Y-C

TOXIC EFFECTS :

Liver - changes in liver weight Kidney, Ureter, Bladder - changes in bladder weight Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

100 mg/kg/10D-I

TOXIC EFFECTS :

Endocrine - changes in spleen weight Blood - changes in other cell count (unspecified) Immunological Including Allergic - decreased immune response

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

162 mg/kg/90D-C

TOXIC EFFECTS :

Biochemical - Neurotransmitters or modulators (putative) - dopamine in striatum

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

287 mg/kg/35D-C

TOXIC EFFECTS :

Liver - other changes Liver - changes in liver weight

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

75 mg/kg/3D-I

TOXIC EFFECTS :

Behavioral - tremor Musculoskeletal - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

12500 ug/kg/5D-I

TOXIC EFFECTS :

Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - hepatic microsomal mixed oxidase (dealkylation, hydroxylation, etc.)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

180 mg/kg/18D-I

TOXIC EFFECTS :

Behavioral - ataxia Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - death

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

150 mg/kg/3D-I

TOXIC EFFECTS :

Brain and Coverings - other degenerative changes Behavioral - tremor Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

320 mg/kg/10W-I

TOXIC EFFECTS :

Liver - changes in liver weight

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

560 mg/kg/2.5Y-C

TOXIC EFFECTS :

Cardiac - changes in heart weight Liver - changes in liver weight Kidney, Ureter, Bladder - changes in bladder weight

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Bird - quail

DOSE/DURATION :

1470 mg/kg/42D-C

TOXIC EFFECTS :

Liver - changes in liver weight Related to Chronic Data - death Related to Chronic Data - changes in testicular weight

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

200 mg/kg/2Y-C

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

1200 mg/kg/80W-I

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :

TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

670 mg/kg/80W-I

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :

TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

1340 mg/kg/80W-C

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :

TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

1550 mg/kg/80W-C

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Liver - tumors

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

63 mg/kg

SEX/DURATION :

female 2-22 day(s) after conception lactating female 21 day(s) post-birth

TOXIC EFFECTS :

Reproductive - Effects on Newborn - biochemical and metabolic

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

42 mg/kg

SEX/DURATION :

female 2-22 day(s) after conception lactating female 21 day(s) post-birth

TOXIC EFFECTS :

Reproductive - Effects on Newborn - other postnatal measures or effects

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

100 mg/kg

SEX/DURATION :

female 7-16 day(s) after conception

TOXIC EFFECTS :

Reproductive - Specific Developmental Abnormalities - Central Nervous System Reproductive - Specific Developmental Abnormalities - urogenital system Reproductive - Specific Developmental Abnormalities - homeostasis

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

60 mg/kg

SEX/DURATION :

female 7-16 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

17 mg/kg

SEX/DURATION :

female 1-22 day(s) after conception lactating female 12 day(s) post-birth

TOXIC EFFECTS :

Reproductive - Effects on Newborn - behavioral

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

18 mg/kg

SEX/DURATION :

male 5 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea) Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

25 mg/kg

SEX/DURATION :

female 1 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - other effects

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

50 mg/kg

SEX/DURATION :

female 1 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - menstrual cycle changes or disorders Reproductive - Fertility - mating performance (e.g. # sperm positive females per # females mated; # copulations per # estrus cycles) Reproductive - Fertility - female fertility index (e.g. # females pregnant per # sperm positive females; # females pregnant per # females mated)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

50 mg/kg

SEX/DURATION :

female 1 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Fertility - pre-implantation mortality (e.g. reduction in number of implants per female; total number of implants per corpora lutea)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

75 mg/kg

SEX/DURATION :

female 1 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - uterus, cervix, vagina

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Subcutaneous

DOSE :

2 mg/kg

SEX/DURATION :

female 2 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - uterus, cervix, vagina

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Subcutaneous

DOSE :

10 mg/kg

SEX/DURATION :

female 2 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Maternal Effects - ovaries, fallopian tubes

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

16500 ug/kg

SEX/DURATION :

male 4 week(s) pre-mating female 4 week(s) pre-mating

TOXIC EFFECTS :

Reproductive - Fertility - other measures of fertility

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

120 mg/kg

SEX/DURATION :

female 7-16 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

100 mg/kg

SEX/DURATION :

female 8-12 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Newborn - live birth index (measured after birth) Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

120 mg/kg

SEX/DURATION :

female 8-12 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Newborn - live birth index (measured after birth) Reproductive - Effects on Newborn - viability index (e.g., # alive at day 4 per # born alive) Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)

MUTATION DATA

TEST SYSTEM :

Bird - quail

REFERENCE :

TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 43,535,1978 *** REVIEWS *** IARC Cancer Review:Animal Sufficient Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 20,67,1979 IARC Cancer Review:Human No Adequate Data IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 20,67,1979 IARC Cancer Review:Group 2B IMSUDL IARC Monographs, Supplement. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) No.1- 1979- Volume(issue)/page/year: 7,56,1987 TOXICOLOGY REVIEW STEVA8 Science of the Total Environment. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1972- Volume(issue)/page/year: 9,1,1978 TOXICOLOGY REVIEW JTEHD6 Journal of Toxicology and Environmental Health. (Hemisphere Pub., 1025 Vermont Ave., NW, Washington, DC 20005) V.1- 1975/76- Volume(issue)/page/year: 4,895,1978 TOXICOLOGY REVIEW CTOXAO Clinical Toxicology. (New York, NY) V.1-18, 1968-81. For publisher information, see JTCTDW. Volume(issue)/page/year: 13,231,1978 TOXICOLOGY REVIEW JEPTDQ Journal of Environmental Pathology and Toxicology. (Park Forest South, IL) V.1-5(3), 1977-81(?). For publisher information, see JEPOEC. Volume(issue)/page/year: 2(3),671,1979 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-FRANCE;Carcinogen JAN 1993 OEL-GERMANY;Carcinogen JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO KEPONE-air:10H CA TWA 0.001 mg/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M2969 No. of Facilities: 280 (estimated) No. of Industries: 1 No. of Occupations: 2 No. of Employees: 12600 (estimated)