Isobutane |
Synonyms & Trade Names 2-Methylpropane [Note: Also see specific listing for n-Butane.] |
CAS No. 75-28-5 |
RTECS No. TZ4300000 |
DOT ID & Guide 1075 115
1969 115 |
FormulaCH3CH(CH3)2 |
Conversion 1 ppm = 2.38 mg/m3 |
IDLH N.D.
See: IDLH INDEX |
Exposure Limits NIOSH REL: TWA 800 ppm (1900 mg/m3)
OSHA PEL†: none |
Measurement Methods
None available
See: NMAM or OSHA Methods |
Physical Description Colorless gas with a gasoline-like or natural gas odor. [Note: Shipped as a liquefied compressed gas. A liquid below 11°F.] |
MW: 58.1 |
BP: 11°F |
FRZ: -255°F |
Sol: Slight |
VP(70°F): 3.1 atm |
IP: 10.74 eV |
|
Fl.P: NA (Gas) |
UEL: 8.4% |
LEL: 1.6% |
RGasD: 2.06 |
|
| Flammable Gas |
Incompatibilities & Reactivities Strong oxidizers (e.g., nitrates & perchlorates), chlorine, fluorine, (nickel carbonyl + oxygen) |
Exposure Routes inhalation, skin and/or eye contact (liquid) |
Symptoms drowsiness, narcosis, asphyxia; liquid: frostbite |
Target Organs central nervous system |
|
Personal Protection/Sanitation (See protection codes)
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
|
Respirator Recommendations Not available.
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 0901
|
