*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : GU4709600
CHEMICAL NAME           : 2,5-Cyclohexadien-1,4-dione, 2,3,5-trimethyl-
CAS REGISTRY NUMBER     : 935-92-2
LAST UPDATED            : 199710
DATA ITEMS CITED        : 9
MOLECULAR FORMULA       : C9-H10-O2
MOLECULAR WEIGHT        : 150.19
SYNONYMS/TRADE NAMES :
   * p-Benzoquinone, 2,3,5-trimethyl-
   * Benzoquinone, trimethyl-
   * Cumoquinone
   * psi-Cumoquinone
   * p-Pseudocumoquinone
   * Trimethylbenzoquinone
   * Trimethyl-p-benzoquinone
   * Trimethyl-1,4-benzoquinone
   * 2,3,5-Trimethyl-p-benzoquinone
   * Trimethylchinon
   * 2,3,5-Trimethyl-2,5-cyclohexadien-1,4-dione
   * Trimethylquinone
   * Trimethyl-p-quinone
   * 2,3,5-Trimethylquinone
 
                       *** 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           : 200 mg/kg
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Behavioral - convulsions or effect on seizure threshold
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0545315
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 200 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   EPASR* United States Environmental Protection Agency, Office of Pesticides
   and Toxic Substances. (U.S. Environmental Protection Agency, 401 M St., SW,
   Washington, DC 20460)  History unknown.  Volume(issue)/page/year:
   8EHQ-0291-1191
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 25 mg/kg
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Behavioral - convulsions or effect on seizure threshold
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0545315
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 200 mg/kg
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Behavioral - tremor
   Skin and Appendages - hair
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0545315
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 18 mg/kg
TOXIC EFFECTS :
   Behavioral - convulsions or effect on seizure threshold
   Lungs, Thorax, or Respiration - dyspnea
   Gastrointestinal - other changes
REFERENCE :
   NTIS** National Technical Information Service.  (Springfield, VA 22161)
   Formerly U.S. Clearinghouse for Scientific & Technical Information.
   Volume(issue)/page/year: OTS0529741-1
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : >200 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   EPASR* United States Environmental Protection Agency, Office of Pesticides
   and Toxic Substances. (U.S. Environmental Protection Agency, 401 M St., SW,
   Washington, DC 20460)  History unknown.  Volume(issue)/page/year:
   8EHQ-0291-1191

                          *** 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 ***