*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : SZ1200000 CHEMICAL NAME : Phosphine oxide, hexyldipentyl- CAS REGISTRY NUMBER : 74038-20-3 LAST UPDATED : 197901 DATA ITEMS CITED : 1 MOLECULAR FORMULA : C16-H35-O-P MOLECULAR WEIGHT : 274.48 WISWESSER LINE NOTATION : OP6&5&5 SYNONYMS/TRADE NAMES : * N-Hexyldi-N-pentylphosphine oxide *** 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#03113 *** END OF RECORD ***