RTECS NUMBER : EK4430000
CHEMICAL NAME : Butane, 2-methyl-
CAS REGISTRY NUMBER : 78-78-4
OTHER CAS REGISTRY NOS. : 68923-44-4
92046-46-3
LAST UPDATED : 199710
DATA ITEMS CITED : 10
MOLECULAR FORMULA : C5-H12
MOLECULAR WEIGHT : 72.17
WISWESSER LINE NOTATION : 2Y1&1
SYNONYMS/TRADE NAMES :
* Ethyldimethylmethane
* Isoamylhydride
* Isopentane
* 2-Methylbutane
* 1,1,2-Trimethylethane
*** HEALTH HAZARD DATA ***
** ACUTE TOXICITY DATA **
TYPE OF TEST : LCLo - Lowest published lethal concentration
ROUTE OF EXPOSURE : Inhalation
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 419 gm/m3/2H
TOXIC EFFECTS :
Behavioral - excitement
REFERENCE :
JPETAB Journal of Pharmacology and Experimental Therapeutics. (Williams &
Wilkins Co., 428 E. Preston St., Baltimore, MD 21202) V.1- 1909/10-
Volume(issue)/page/year: 58,74,1936
** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 10 gm/kg/4W-I
TOXIC EFFECTS :
Nutritional and Gross Metabolic - weight loss or decreased weight gain
Related to Chronic Data - death
REFERENCE :
TIHEEC Toxicology and Industrial Health. (Princeton Scientific Pub. Co.,
POB 2155, Princeton, NJ 08540) V.1- 1985- Volume(issue)/page/year:
1(3),67,1985
*** OCCUPATIONAL EXPOSURE LIMITS ***
OEL-DENMARK:TWA 500 ppm (1500 mg/m3) JAN 1993
OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV
*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***
NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOHS - National Occupational Hazard Survey (1974)
NOHS Hazard Code - 54246
No. of Facilities: 197 (estimated)
No. of Industries: 6
No. of Occupations: 9
No. of Employees: 21748 (estimated)
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - 54246
No. of Facilities: 132 (estimated)
No. of Industries: 5
No. of Occupations: 13
No. of Employees: 6605 (estimated)
No. of Female Employees: 1247 (estimated)