Agent Name |
Isopentane |
CAS Number |
78-78-4 |
Formula |
C5-H12 |
Major Category |
Solvents |
Synonyms |
1,1,2-Trimethylethane; 2-Methylbutane; Butane, 2-methyl-; Dimethylethylmethane; Ethyldimethylmethane; Isoamylhydride; Isopentane; [ChemIDplus] |
Category |
Aliphatics, Saturated |
Description |
Colorless liquid with a pleasant, gasoline-like odor; [HSDB] |
Sources/Uses |
Used as a chemical intermediate, a blowing agent for polystyrene, a gasoline additive, and an anesthetic; [HSDB] |
Comments |
CNS depression is observed in mice exposed for 5-60 minutes at concentrations of 90,000-120,000 ppm (9-12% by volume); Concentrations of 150,000-170,000 ppm are lethal for dogs. [HSDB] See "n-Pentane." |
Exposure Assessment |
Skin Designation (ACGIH) |
No |
TLV (ACGIH) |
600 ppm |
PEL (OSHA) |
1000 ppm |
MAK |
1000 ppm |
Vapor Pressure |
689 mm Hg |
Odor Threshold Low |
400 ppm |
Lethal Concentration |
LCLo (mice) = 419,000 mg/m3/2H |
Explanatory Notes |
Odor threshold from ACGIH; MP = -159.9 degrees C; BP = 27.8 degrees C; |
Flammability (NFPA) |
4: burns readily |
Adverse Effects |
Neurotoxin |
CNS Solvent Syndrome |
Links to Other NLM Databases |
Health Studies |
Human Health Effects from Hazardous Substances Data Bank: ISOPENTANE
|
|
|