*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : NY1510000
CHEMICAL NAME           : Isovaleric acid, methyl ester
CAS REGISTRY NUMBER     : 556-24-1
BEILSTEIN REFERENCE NO. : 1699922
REFERENCE               : 4-02-00-00897 (Beilstein Handbook Reference)
LAST UPDATED            : 199701
DATA ITEMS CITED        : 6
MOLECULAR FORMULA       : C6-H12-O2
MOLECULAR WEIGHT        : 116.18
WISWESSER LINE NOTATION : 1Y1&1VO1
SYNONYMS/TRADE NAMES :
   * Butanoic acid, 3-methyl-, methyl ester
   * Methyl isopentanoate
   * Methyl 3-methylbutanoate
   * Methyl 3-methylbutyrate
 
                       *** 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           : 20250 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
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 5693 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   IMSUAI Industrial Medicine and Surgery.  (Northbrook, IL)  V.18-42, 1949-73.
    For publisher information, see IOHSA5.  Volume(issue)/page/year: 41,31,1972
 
TYPE OF TEST            : LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Mammal - species unspecified
DOSE/DURATION           : 18800 mg/m3
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GISAAA Gigiena i Sanitariya.  For English translation, see HYSAAV.  (V/O
   Mezhdunarodnaya Kniga, 113095 Moscow, USSR)  V.1-    1936-
   Volume(issue)/page/year: 51(5),61,1986

                    *** OCCUPATIONAL EXPOSURE LIMITS ***
 
   OEL-RUSSIA:STEL 5 mg/m3;Skin JAN 1993

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - E0373
       No. of Facilities: 25 (estimated)
       No. of Industries: 1
       No. of Occupations: 1
       No. of Employees: 427 (estimated)
       No. of Female Employees: 176 (estimated)

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

 
                            *** END OF RECORD ***