*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : SC5425000 CHEMICAL NAME : 4-Pentyn-2-one, 5-hydroxy- CAS REGISTRY NUMBER : 64011-43-4 LAST UPDATED : 199510 DATA ITEMS CITED : 2 MOLECULAR FORMULA : C5-H6-O2 MOLECULAR WEIGHT : 98.11 WISWESSER LINE NOTATION : Q1UU2V1 COMPOUND DESCRIPTOR : Agricultural Chemical SYNONYMS/TRADE NAMES : * 1-Hydroxy-2-pentyne-4-one * TL 1150 *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LDLo - Lowest published lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 50 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. (Washington, DC) Volume(issue)/page/year: 5,9,1953 TYPE OF TEST : LCLo - Lowest published lethal concentration ROUTE OF EXPOSURE : Inhalation SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 500 mg/m3/10M TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NDRC** National Defense Research Committee, Office of Scientific Research and Development, Progress Report. Volume(issue)/page/year: No.9-4-1-19,1943 *** END OF RECORD ***