*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : ES0175000
CHEMICAL NAME           : 2-Butynedioic acid, dimethyl ester
CAS REGISTRY NUMBER     : 762-42-5
BEILSTEIN REFERENCE NO. : 0607063
REFERENCE               : 4-02-00-02291 (Beilstein Handbook Reference)
LAST UPDATED            : 199701
DATA ITEMS CITED        : 3
MOLECULAR FORMULA       : C6-H6-O4
MOLECULAR WEIGHT        : 142.12
WISWESSER LINE NOTATION : 1OV1UU1VO1
COMPOUND DESCRIPTOR     : Agricultural Chemical
SYNONYMS/TRADE NAMES :
   * Acetylenedicarboxylic acid, dimethyl ester
   * 1,2-Bis(methoxycarbonyl)ethyne
   * Di(carbomethoxy)acetylene
   * Dimethyl acetylenedicarboxylic acid
   * Dimethyl ethynedicarboxylate
   * Methyl acetylenedicarboxylate
 
                       *** 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: 5,13,1953
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 550 mg/kg
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Behavioral - ataxia
   Behavioral - coma
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992. For publisher information, see MTPEEI
   Volume(issue)/page/year: 28(6),55,1984

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

 
                            *** END OF RECORD ***