*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : NQ4375000
CHEMICAL NAME           : Isobutyric acid
CAS REGISTRY NUMBER     : 79-31-2
BEILSTEIN REFERENCE NO. : 0635770
REFERENCE               : 4-02-00-00843 (Beilstein Handbook Reference)
LAST UPDATED            : 199710
DATA ITEMS CITED        : 7
MOLECULAR FORMULA       : C4-H8-O2
MOLECULAR WEIGHT        : 88.12
WISWESSER LINE NOTATION : QVY1&1
COMPOUND DESCRIPTOR     : Primary Irritant
SYNONYMS/TRADE NAMES :
   * Acetic acid, dimethyl-
   * Dimethylacetic acid
   * Isopropylformic acid
   * Kyselina isomaselna
   * alpha-Methylpropionic acid
   * 2-Methylpropanoic acid
   * 2-Methylpropionic acid
   * Propionic acid, 2-methyl-
 
                       *** HEALTH HAZARD DATA ***
 
                      ** SKIN/EYE IRRITATION DATA **
 
TYPE OF TEST            : Open irritation test
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 139 ug/24H
REFERENCE :
   AIHAAP American Industrial Hygiene Association Journal.  (AIHA, 475 Wolf
   Ledges Pkwy., Akron, OH 44311)  V.19-    1958-  Volume(issue)/page/year:
   23,95,1962
 
                        ** ACUTE TOXICITY DATA **
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 280 uL/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   AIHAAP American Industrial Hygiene Association Journal.  (AIHA, 475 Wolf
   Ledges Pkwy., Akron, OH 44311)  V.19-    1958-  Volume(issue)/page/year:
   23,95,1962
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Administration onto the skin
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 500 uL/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   AIHAAP American Industrial Hygiene Association Journal.  (AIHA, 475 Wolf
   Ledges Pkwy., Akron, OH 44311)  V.19-    1958-  Volume(issue)/page/year:
   23,95,1962

                              *** REVIEWS ***
 
   TOXICOLOGY REVIEW
   AMIHAB AMA Archives of Industrial Health.  (Chicago, IL)  V.11-21, 1955-60.
   For publisher information, see AEHLAU.  Volume(issue)/page/year: 21,100,1960

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

NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
   NOES - National Occupational Exposure Survey (1983)
     NOES Hazard Code - X4110
       No. of Facilities: 93 (estimated)
       No. of Industries: 4
       No. of Occupations: 14
       No. of Employees: 5052 (estimated)
       No. of Female Employees: 652 (estimated)

                          *** STATUS IN U.S. ***
 
   EPA TSCA Section 8(b) CHEMICAL INVENTORY
   
   EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998

 
                            *** END OF RECORD ***