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