*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : ER9600000 CHEMICAL NAME : 2-Butyne, 1,4-dichloro- CAS REGISTRY NUMBER : 821-10-3 BEILSTEIN REFERENCE NO. : 0635740 REFERENCE : 4-01-00-00973 (Beilstein Handbook Reference) LAST UPDATED : 199701 DATA ITEMS CITED : 2 MOLECULAR FORMULA : C4-H4-Cl2 MOLECULAR WEIGHT : 122.98 WISWESSER LINE NOTATION : G2UU2G SYNONYMS/TRADE NAMES : * 1,4-Dichlorobutyne * 1,4-Dichloro-2-butyne *** 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#02969 *** STATUS IN U.S. *** EPA TSCA Section 8(b) CHEMICAL INVENTORY *** END OF RECORD ***