*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : DV3960000
CHEMICAL NAME           : 1,1'-Biphenyl, 4,4'-diisocyanato-3,3'-dimethyl-
CAS REGISTRY NUMBER     : 91-97-4
BEILSTEIN REFERENCE NO. : 2743710
REFERENCE               : 4-13-00-00424 (Beilstein Handbook Reference)
LAST UPDATED            : 199803
DATA ITEMS CITED        : 5
MOLECULAR FORMULA       : C16-H12-N2-O2
MOLECULAR WEIGHT        : 264.30
WISWESSER LINE NOTATION : OCNR B1 DR C1 DNCO
SYNONYMS/TRADE NAMES :
   * Bitolylene diisocyanate
   * Bitolylene diisocyanate
   * 3,3'-Dimethyl-4,4'-biphenylene diisocyanate
   * isocyanic acid, 3,3'-dimethyl-4,4'-biphenylylene ester
   * Nacconate 200
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 56 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems
   Laboratory, NIOSH Exchange Chemicals.  (Aberdeen Proving Ground, MD 21010)
   Volume(issue)/page/year: NX#02412
 
TYPE OF TEST            : LD - Lethal dose
ROUTE OF EXPOSURE       : Unreported
SPECIES OBSERVED        : Mammal - species unspecified
DOSE/DURATION           : >5 gm/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   MTPEEI Meditsina Truda i Promyshlennaya Ekologiya.  Industrial Medicine and
   Ecology. (Mezhdunarodnaya Kniga, ul.B. Yakimanka, 39 117049 Moscow, Russia)
   No.1-    1993-  Volume(issue)/page/year: (7),37,1994

                          *** 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   EPA TSCA Section 8(d) unpublished health/safety studies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 ***