*** CHEMICAL IDENTIFICATION *** RTECS NUMBER : NQ5250000 CHEMICAL NAME : Isobutyric acid, isobutyl ester CAS REGISTRY NUMBER : 97-85-8 BEILSTEIN REFERENCE NO. : 1701355 REFERENCE : 4-02-00-00847 (Beilstein Handbook Reference) LAST UPDATED : 199710 DATA ITEMS CITED : 10 MOLECULAR FORMULA : C8-H16-O2 MOLECULAR WEIGHT : 144.24 WISWESSER LINE NOTATION : 1Y1&VO1Y1&1 SYNONYMS/TRADE NAMES : * Isobutylester kyseliny isomaselne * 2-Methylpropyl isobutyrate * 2-Methylpropyl 2-methylpropanoate * Propanoic acid, 2-methyl-, 2-methylpropyl ester *** HEALTH HAZARD DATA *** ** ACUTE TOXICITY DATA ** TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 12800 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NPIRI* Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. (National Assoc. of Printing Ink Research Institute, Francis McDonald Sinclair Memorial Laboratory, Lehigh Univ., Bethlehem, PA 18015) Volume(issue)/page/year: 1,13,1974 TYPE OF TEST : LC50 - Lethal concentration, 50 percent kill ROUTE OF EXPOSURE : Inhalation SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 5000 ppm/6H TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NPIRI* Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. (National Assoc. of Printing Ink Research Institute, Francis McDonald Sinclair Memorial Laboratory, Lehigh Univ., Bethlehem, PA 18015) Volume(issue)/page/year: 1,13,1974 TYPE OF TEST : LDLo - Lowest published lethal dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - mouse DOSE/DURATION : 12800 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 16,337,1978 TYPE OF TEST : LD50 - Lethal dose, 50 percent kill ROUTE OF EXPOSURE : Administration onto the skin SPECIES OBSERVED : Rodent - rabbit DOSE/DURATION : >8600 mg/kg TOXIC EFFECTS : Details of toxic effects not reported other than lethal dose value REFERENCE : NPIRI* Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. (National Assoc. of Printing Ink Research Institute, Francis McDonald Sinclair Memorial Laboratory, Lehigh Univ., Bethlehem, PA 18015) Volume(issue)/page/year: 1,13,1974 ** OTHER MULTIPLE DOSE TOXICITY DATA ** TYPE OF TEST : TDLo - Lowest published toxic dose ROUTE OF EXPOSURE : Oral SPECIES OBSERVED : Rodent - rat DOSE/DURATION : 126 gm/kg/18W-I TOXIC EFFECTS : Endocrine - changes in spleen weight REFERENCE : FCTXAV Food and Cosmetics Toxicology. (London, UK) V.1-19, 1963-81. For publisher information, see FCTOD7. Volume(issue)/page/year: 16,337,1978 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M0725 No. of Facilities: 4684 (estimated) No. of Industries: 63 No. of Occupations: 56 No. of Employees: 39405 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M0725 No. of Facilities: 5036 (estimated) No. of Industries: 58 No. of Occupations: 51 No. of Employees: 64893 (estimated) No. of Female Employees: 19443 (estimated) *** STATUS IN U.S. *** EPA TSCA Section 8(b) CHEMICAL INVENTORY EPA TSCA Section 8(d) unpublished health/safety studies EPA TSCA TEST SUBMISSION (TSCATS) DATA BASE, JUNE 1998 *** END OF RECORD ***