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Isobutane |
CAS 75-28-5 | ||
CH3CH(CH3)2 |
RTECS TZ4300000 | ||
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Synonyms & Trade Names 2-Methylpropane [Note: Also see specific listing for n-Butane.] |
DOT ID & Guide 1075 115 1969 115 |
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Exposure
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NIOSH REL: TWA 800 ppm (1900 mg/m3) | ||
| OSHA PEL†: none | |||
| IDLH N.D. See: IDLH INDEX | Conversion 1 ppm = 2.38 mg/m3 | ||
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Physical Description Colorless gas with a gasoline-like or natural gas odor. [Note: Shipped as a liquefied compressed gas. A liquid below 11°F.] |
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MW: 58.1 |
BP: 11°F |
FRZ: -255°F |
Sol: Slight |
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VP(70°F): 3.1 atm |
IP: 10.74 eV |
RGasD: 2.06 |
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Fl.P: NA (Gas) |
UEL: 8.4% |
LEL: 1.6% |
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| Flammable Gas | |||
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Incompatibilities & Reactivities Strong oxidizers (e.g., nitrates & perchlorates), chlorine, fluorine, (nickel carbonyl + oxygen) |
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Measurement Methods None available See: NMAM or OSHA Methods |
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Personal Protection & Sanitation (See protection) Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: When wet (flammable) Change: No recommendation Provide: Frostbite wash |
First Aid (See procedures) Eye: Frostbite Skin: Frostbite Breathing: Respiratory support |
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Important additional information about respirator selection Respirator Recommendations Not available. |
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| Exposure Routes inhalation, skin and/or eye contact (liquid) | |
| Symptoms Drowsiness, narcosis, asphyxia; liquid: frostbite | |
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Target Organs
central nervous system |
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| See also: INTRODUCTION See ICSC CARD: 0901 |