*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : NQ5425000
CHEMICAL NAME           : Isobutyric acid, methyl ester
CAS REGISTRY NUMBER     : 547-63-7
BEILSTEIN REFERENCE NO. : 1740720
REFERENCE               : 4-02-00-00846 (Beilstein Handbook Reference)
LAST UPDATED            : 199709
DATA ITEMS CITED        : 5
MOLECULAR FORMULA       : C5-H10-O2
MOLECULAR WEIGHT        : 102.15
WISWESSER LINE NOTATION : 1Y1&VO1
SYNONYMS/TRADE NAMES :
   * Methylester kyseliny isomaselne
   * Methyl isobutyrate
   * Methyl 2-methylpropanoate
   * Methyl 2-methylpropionate
   * Propanoic acid, 2-methyl-, methyl ester
 
                       *** 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           : 25500 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: -,84,1982

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-RUSSIA:STEL 10 mg/m3;Skin JAN 1993

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOHS - National Occupational Hazard Survey (1974)
     NOHS Hazard Code - M4031
       No. of Facilities: 11 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 22 (estimated)
   
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - M4031
       No. of Facilities: 23 (estimated)
       No. of Industries: 1
       No. of Occupations: 2
       No. of Employees: 45 (estimated)

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

 
                            *** END OF RECORD ***