*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : DC3325000
CHEMICAL NAME           : Benzene, 1,2,4-trimethyl-
CAS REGISTRY NUMBER     : 95-63-6
LAST UPDATED            : 199710
DATA ITEMS CITED        : 14
MOLECULAR FORMULA       : C9-H12
MOLECULAR WEIGHT        : 120.21
WISWESSER LINE NOTATION : 1R B1 D1
SYNONYMS/TRADE NAMES :
   * Asymmetrical trimethylbenzene
   * Benzene, 1,2,5-trimethyl-
   * psi-Cumene
   * Pseudocumene
   * Pseudocumol
   * as-Trimethylbenzene
 
                       *** 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           : 5 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J.,
   Prague, Czechoslovakia, Avicenum, 1986  Volume(issue)/page/year: -,34,1986
 
TYPE OF TEST            : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 18 gm/m3/4H
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 44(5),15,1979
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1752 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   85KYAH "Merck Index; an Encyclopedia of Chemicals, Drugs, and Biologicals",
   11th ed., Rahway, NJ 07065, Merck & Co., Inc. 1989 Volume(issue)/page/year:
   11,1258,1989
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - guinea pig
DOSE/DURATION           : 1788 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine.
   (Chicago, IL)  V.2-10, 1950-54. For publisher information, see AEHLAU.
   Volume(issue)/page/year: 9,227,1954
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 10 gm/kg/4W-I
TOXIC EFFECTS :
   Related to Chronic Data - death
REFERENCE :
   TIHEEC Toxicology and Industrial Health.  (Princeton Scientific Pub. Co.,
   POB 2155, Princeton, NJ 08540)  V.1-    1985-  Volume(issue)/page/year:
   1(3),67,1985
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 6400 mg/kg/8W-I
TOXIC EFFECTS :
   Peripheral Nerve and Sensation - recording from afferent nerve
   Peripheral Nerve and Sensation - recording from peripheral motor nerve
   Nutritional and Gross Metabolic - weight loss or decreased weight gain
REFERENCE :
   JJATDK JAT, Journal of Applied Toxicology.  (John Wiley & Sons Ltd., Baffins
   Lane, Chichester, W. Sussex PO19 1UD, UK)  V.1-    1981-
   Volume(issue)/page/year: 13,123,1993
 
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 20 mg/m3/24H/17W-I
TOXIC EFFECTS :
   Kidney, Ureter, Bladder - other changes in urine composition
   Biochemical - Enzyme inhibition, induction, or change in blood or tissue
   levels - catalases
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 44(5),15,1979

         *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - B0044
       No. of Facilities: 33 (estimated)
       No. of Industries: 2
       No. of Occupations: 13
       No. of Employees: 3186 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - B0044
       No. of Facilities: 3684 (estimated)
       No. of Industries: 47
       No. of Occupations: 42
       No. of Employees: 65953 (estimated)
       No. of Female Employees: 9768 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA 8(a) PRELIMINARY ASSESSMENT INFORMATION, FINAL RULE
   FEREAC Federal Register.  (U.S. Government Printing Office, Supt. of
   Documents, Washington, DC 20402) V.1-    1936-  Volume(issue)/page/year:
   47,26992,82

   EPA TSCA Section 8(d) unpublished health/safety studies
   
   EPA TSCA Section 8(e) Risk Notification, 8EHQ-0892-8911
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***