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| n-Pentane | CAS 109-66-0 | ||
| CH3[CH2]3CH3 | RTECS RZ9450000 | ||
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Synonyms & Trade Names Pentane, normal-Pentane |
DOT ID & Guide 1265 128 |
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Exposure Limits |
NIOSH REL: TWA 120 ppm (350 mg/m3) C 610 ppm (1800 mg/m3) [15-minute] | ||
| OSHA PEL†: TWA 1000 ppm (2950 mg/m3) | |||
| IDLH 1500 ppm [10%LEL] See: 109660 | Conversion 1 ppm = 2.95 mg/m3 | ||
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Physical Description Colorless liquid with a gasoline-like odor. [Note: A gas above 97°F. May be utilized as a fuel.] |
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MW: 72.2 |
BP: 97°F |
FRZ: -202°F |
Sol: 0.04% |
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VP: 420 mmHg |
IP: 10.34 eV |
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Sp.Gr: 0.63 |
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Fl.P: -57°F |
UEL: 7.8% |
LEL: 1.5% |
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| Class IA Flammable Liquid: Fl.P. below 73°F and BP below 100°F. | |||
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Incompatibilities & Reactivities Strong oxidizers |
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Measurement Methods NIOSH 1500; OSHA 7 See: NMAM or OSHA Methods |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water wash promptly Breathing: Respiratory support Swallow: Medical attention immediately |
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Important additional information about respirator selection Respirator Recommendations NIOSH Up to 1200 ppm: (APF = 10) Any supplied-air respirator Up to 1500 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, ingestion, skin and/or eye contact | |
| Symptoms Irritation eyes, skin, nose; dermatitis; chemical pneumonitis (aspiration liquid); drowsiness; in animals: narcosis | |
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Target Organs
Eyes, skin, respiratory system, central nervous system |
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| See also: INTRODUCTION See ICSC CARD: 0534 |