*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : EN0950000
CHEMICAL NAME           : 1-Buten-3-yne
CAS REGISTRY NUMBER     : 689-97-4
LAST UPDATED            : 199712
DATA ITEMS CITED        : 3
MOLECULAR FORMULA       : C4-H4
MOLECULAR WEIGHT        : 52.08
SYNONYMS/TRADE NAMES :
   * Monovinylacetylene
   * Vinylacetylene
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 97200 mg/m3/2H
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   85GMAT "Toxicometric Parameters of Industrial Toxic Chemicals Under Single
   Exposure," Izmerov, N.F., et al., Moscow, Centre of International Projects,
   GKNT, 1982  Volume(issue)/page/year: -,119,1982

         *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X5371
       No. of Facilities: 3 (estimated)
       No. of Industries: 1
       No. of Occupations: 4
       No. of Employees: 64 (estimated)
       No. of Female Employees: 3 (estimated)

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

 
                            *** END OF RECORD ***