*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : EN0960000
CHEMICAL NAME           : 1-Buten-3-yne, 2-methyl-
CAS REGISTRY NUMBER     : 78-80-8
BEILSTEIN REFERENCE NO. : 0969175
REFERENCE               : 4-01-00-01089 (Beilstein Handbook Reference)
LAST UPDATED            : 199712
DATA ITEMS CITED        : 5
MOLECULAR FORMULA       : C5-H6
MOLECULAR WEIGHT        : 66.11
WISWESSER LINE NOTATION : 1UU1Y1&U1
COMPOUND DESCRIPTOR     : Primary Irritant
SYNONYMS/TRADE NAMES :
   * Isopropenylacetylene
   * 2-Methyl-1-buten-3-yne
   * Valylene
 
                       *** HEALTH HAZARD DATA ***
 
                      ** SKIN/EYE IRRITATION DATA **
 
TYPE OF TEST            : Standard Draize test
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 500 mg
REACTION SEVERITY       : Moderate
REFERENCE :
   SCCUR* Shell Chemical Company.  Unpublished Report.  (2401 Crow Canyon Rd.,
   San Romon, CA 94583)  Volume(issue)/page/year: -,6,1961
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 639 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   SCCUR* Shell Chemical Company.  Unpublished Report.  (2401 Crow Canyon Rd.,
   San Romon, CA 94583)  Volume(issue)/page/year: -,6,1961
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 350 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   SCCUR* Shell Chemical Company.  Unpublished Report.  (2401 Crow Canyon Rd.,
   San Romon, CA 94583)  Volume(issue)/page/year: -,6,1961
 
TYPE OF TEST            : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 12600 mg/m3
TOXIC EFFECTS :
   Behavioral - somnolence (general depressed activity)
   Behavioral - ataxia
   Lungs, Thorax, or Respiration - other changes
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: 31(4),55,1987
 
TYPE OF TEST            : LD - Lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : >500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   CBCCT* "Summary Tables of Biological Tests," National Research Council
   Chemical-Biological Coordination Center.  (National Academy of Science
   Library, 2101 Constitution Ave., NW, Washington, DC 20418)
   Volume(issue)/page/year: 8,100,1956
 
                            *** END OF RECORD ***