*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : TG6720000 CHEMICAL NAME : Phosphorous acid, butyl ester CAS REGISTRY NUMBER : 16456-56-7 BEILSTEIN REFERENCE NO. : 0969857 REFERENCE : 3-01-00-01509 (Beilstein Handbook Reference) LAST UPDATED : 199701 DATA ITEMS CITED : 3 MOLECULAR FORMULA : C4-H11-O3-P MOLECULAR WEIGHT : 138.12 WISWESSER LINE NOTATION : QPQO4 SYNONYMS/TRADE NAMES : * Butylfosfit * Butyl phosphite * Monobutyl phosphite *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD - Lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : >250 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: 5,38,1953 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 1640 mg/kg TOXIC EFFECTS : Behavioral - somnolence (general depressed activity) REFERENCE : AMIHAB AMA Archives of Industrial Health. (Chicago, IL) V.11-21, 1955-60. For publisher information, see AEHLAU. Volume(issue)/page/year: 11,487,1955 *** STATUS IN U.S. *** EPA TSCA Section 8(b) CHEMICAL INVENTORY *** END OF RECORD ***