*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : MX5160000
CHEMICAL NAME           : Hydroquinone, 2,5-di-tert-butyl-
CAS REGISTRY NUMBER     : 88-58-4
BEILSTEIN REFERENCE NO. : 2049542
REFERENCE               : 4-06-00-06074 (Beilstein Handbook Reference)
LAST UPDATED            : 199707
DATA ITEMS CITED        : 6
MOLECULAR FORMULA       : C14-H22-O2
MOLECULAR WEIGHT        : 222.36
WISWESSER LINE NOTATION : L6V DVJ BX1&1&1 EX1&1&1
COMPOUND DESCRIPTOR     : Tumorigen
SYNONYMS/TRADE NAMES :
   * Antage DBH
   * 1,4-Benzenediol, 2,5-bis(1,1-dimethylethyl)-
   * DBH
   * Dibug
   * 2,5-Di-tert-butylbenzene-1,4-diol
   * 2,5-Di-t-butylhydroquinone
   * DTBHQ
   * Naugard 451
   * Nocrac NS 7
   * Santovar O
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 800 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   KODAK* Kodak Company Reports.  (343 State St., Rochester, NY 14650)
   Volume(issue)/page/year: 21MAY1971
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : >1800 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   KODAK* Kodak Company Reports.  (343 State St., Rochester, NY 14650)
   Volume(issue)/page/year: 21MAY1971
 
                 ** OTHER MULTIPLE DOSE TOXICITY DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 6426 mg/kg/3W-C
TOXIC EFFECTS :
   Blood - change in clotting factors
   Related to Chronic Data - death
REFERENCE :
   JONUAI Journal of Nutrition.  (Subscription Dept., 9650 Rockville Pike,
   Bethesda, MD 20014) V.1-    1928-  Volume(issue)/page/year: 109,453,1979
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - hamster
DOSE/DURATION           : 134 gm/kg/24W-C
TOXIC EFFECTS :
   Tumorigenic - neoplastic by RTECS criteria
   Gastrointestinal - tumors
REFERENCE :
   CRNGDP Carcinogenesis (London). (Oxford Univ. Press, Pinkhill House,
   Southfield Road, Eynsham, Oxford OX8 1JJ, UK)  V.1-    1980-
   Volume(issue)/page/year: 12,1341,1991

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X7949
       No. of Facilities: 155 (estimated)
       No. of Industries: 8
       No. of Occupations: 14
       No. of Employees: 14136 (estimated)
       No. of Female Employees: 6832 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY

 
                            *** END OF RECORD ***