*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : NQ9370000
CHEMICAL NAME : Isocyanic acid,
methylene(3,5,5-trimethyl-3,1-cyclohexylene) ester
CAS REGISTRY NUMBER : 4098-71-9
BEILSTEIN REFERENCE NO. : 2726467
LAST UPDATED : 199712
DATA ITEMS CITED : 24
MOLECULAR FORMULA : C12-H18-N2-O2
MOLECULAR WEIGHT : 222.32
SYNONYMS/TRADE NAMES :
* Cyclohexane, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethyl-
* IPDI
* 3-Isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate
* Isophorone diamine diisocyanate
* Isophorone diisocyanate
*** 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 : 4825 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: OTS0530238
TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 123 mg/m3/4H
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
85INA8 "Documentation of the Threshold Limit Values and Biological Exposure
Indices," 5th ed., Cincinnati, OH, American Conference of Governmental
Industrial Hygienists, Inc., 1986 Volume(issue)/page/year: 5,334(86),1986
TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Administration onto the skin
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1 mL/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: OTS0528418
TYPE OF TEST : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 2500 uL/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: OTS0528418
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Mammal - cat
DOSE/DURATION : 1 mL/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: OTS0528418
TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - guinea pig
DOSE/DURATION : 118 mg/m3/1H
TOXIC EFFECTS :
Behavioral - somnolence (general depressed activity)
Lungs, Thorax, or Respiration - dyspnea
Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161)
Formerly U.S. Clearinghouse for Scientific & Technical Information.
Volume(issue)/page/year: OTS0543418
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 1370 ug/m3/4H/4W-I
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - changes in lung weight
Liver - changes in liver weight
Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161)
Formerly U.S. Clearinghouse for Scientific & Technical Information.
Volume(issue)/page/year: OTS0528418
*** REVIEWS ***
ACGIH TLV-TWA 0.045 mg/m3 (0.005 ppm)
DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices
(BEIs) booklet issues by American Conference of Governmental Industrial
Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year:
TLV/BEI,1997
*** OCCUPATIONAL EXPOSURE LIMITS ***
OEL-BELGIUM:TWA 0.005 ppm (0.045 mg/m3);Skin JAN 1993
OEL-DENMARK:TWA 0.005 ppm (0.045 mg/m3);Skin JAN 1993
OEL-FRANCE:TWA 0.010 ppm (0.09 mg/m3);STEL 0.020 ppm JAN 1993
OEL-GERMANY:TWA 0.01 ppm (0.09 mg/m3) JAN 1993
OEL-THE NETHERLANDS:TWA 0.01 ppm (0.09 mg/m3);Skin JAN 1993
OEL-SWEDEN:TWA 0.005 ppm (0.05 mg/m3);STEL 0.01 ppm (0.09 mg/m3) JAN 1993
OEL-SWITZERLAND:TWA 0.01 ppm (0.09 mg/m3);STEL 0.02 ppm JAN 1993
OEL-UNITED KINGDOM:TWA 0.02 mg/m3;STEL 0.07 mg/m3 JAN 1993
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV
*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***
NIOSH RECOMMENDED EXPOSURE LEVEL (REL) :
NIOSH REL TO IPDI-air:10H TWA 0.005 ppm (Sk);STEL 0.02 ppm (Sk)
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 - 83571
No. of Facilities: 111 (estimated)
No. of Industries: 4
No. of Occupations: 19
No. of Employees: 3441 (estimated)
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - 83571
No. of Facilities: 1186 (estimated)
No. of Industries: 15
No. of Occupations: 16
No. of Employees: 7245 (estimated)
No. of Female Employees: 682 (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 ***