*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : NQ8820000
CHEMICAL NAME           : Isocyanic acid, ester with di-o-toluenemethane
CAS REGISTRY NUMBER     : 139-25-3
BEILSTEIN REFERENCE NO. : 2150383
REFERENCE               : 4-13-00-00432 (Beilstein Handbook Reference)
LAST UPDATED            : 199701
DATA ITEMS CITED        : 2
MOLECULAR FORMULA       : C17-H14-N2-O2
MOLECULAR WEIGHT        : 278.33
WISWESSER LINE NOTATION : OCNR B1 D1R C1 DNCO
SYNONYMS/TRADE NAMES :
   * 3,3'-Dimethyldiphenylmethane-4,4'-diisocyanate
   * 5,5'-Methylenebis(2-isocyanatotoluene)
   * Toluene, 5,5'-methylenebis(2-isocyanato-
 
                       *** 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           : 320 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#00946

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

 
                            *** END OF RECORD ***