26471-62-5

MOLECULAR FORMULA :

C9-H6-N2-O2

MOLECULAR WEIGHT :

174.17

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

Open irritation test

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

4130 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

600 ppm/6H

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 :

Rodent - mouse

DOSE/DURATION :

1950 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

9700 ppb/4H

TOXIC EFFECTS :

Behavioral - excitement Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

11 ppm/4H

TOXIC EFFECTS :

Behavioral - excitement Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

>10 mL/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

12700 ppb/4H

TOXIC EFFECTS :

Behavioral - excitement Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - changes in structure or function of salivary glands

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

15600 mg/kg/13W-I

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

10 ug/m3/24H/22W-C

TOXIC EFFECTS :

Brain and Coverings - recordings from specific areas of CNS Blood - changes in bone marrow (not otherwise specified) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

100 ppb/6H/81D-I

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - other changes

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

2 ppm/6H/5D-I

TOXIC EFFECTS :

Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

2830 ppb/6H/3W-I

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi Blood - changes in erythrocyte (RBC) count 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 - mouse

DOSE/DURATION :

7800 mg/kg/13W-I

TOXIC EFFECTS :

Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

1 ppm/6H/5D-I

TOXIC EFFECTS :

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

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

46 ppb/1W-C

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

1 ppm/6H/5D-I

TOXIC EFFECTS :

Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

29 ppb/8W-C

TOXIC EFFECTS :

Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

31800 mg/kg/2Y-I

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Blood - leukemia Skin and Appendages - tumors

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

63 gm/kg/2Y-I

TOXIC EFFECTS :

Tumorigenic - Carcinogenic by RTECS criteria Blood - tumors Blood - lymphoma, including Hodgkin's disease

TYPE OF TEST :

TD - Toxic dose (other than lowest)

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

63600 mg/kg/2Y-I

TOXIC EFFECTS :

Tumorigenic - neoplastic by RTECS criteria Gastrointestinal - tumors Liver - tumors

TYPE OF TEST :

Sex chromosome loss and nondisjunction

TYPE OF TEST :

Heritable translocation test

MUTATION DATA

TYPE OF TEST :

Sister chromatid exchange

TEST SYSTEM :

Rodent - hamster Ovary

REFERENCE :

SCIEAS Science. (American Assoc. for the Advancement of Science, 1333 H St., NW, Washington, DC 20005) V.1- 1895- Volume(issue)/page/year: 236,933,1987 *** 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: 39,287,1986 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: 39,287,1986 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 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO TOLUENE DIISOCYANATE-air:CA lowest feasible conc. 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 : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3117 No. of Facilities: 2226 (estimated) No. of Industries: 32 No. of Occupations: 45 No. of Employees: 38881 (estimated) No. of Female Employees: 4723 (estimated)