Isobutyric acid cas no:79-31-2

NameIsobutyric acid
CAS79-31-2
Synonyms2-Methylpropionic acid; Isobutyricacid,99%; iso-Butyric acid 99+ %; ISO-BUTYRIC AID; Dimethyl acetic acid; Methyl propionic acid; Natural Isobutyric Acid
EINECS(EC#)201-195-7
Molecular FormulaC4H8O2
Molecular Weight88.11

AppearanceCOLOURLESS LIQUID , WITH CHARACTERISTIC ODOUR
refractive index1.392-1.394

Hazardclass3

Hazard Xn:Harmful
Risk R21/22

CHEMICAL IDENTIFICATION

RTECS NUMBER :

NQ4375000

CHEMICAL NAME :

Isobutyric acid

CAS REGISTRY NUMBER :

79-31-2

BEILSTEIN REFERENCE NO. :

0635770

LAST UPDATED :

199710

DATA ITEMS CITED :

7

MOLECULAR FORMULA :

C4-H8-O2

MOLECULAR WEIGHT :

88.12

WISWESSER LINE NOTATION :

QVY1&1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

Open irritation test

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

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)