n-Pentane
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CAS
109-66-0
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CH3[CH2]3CH3
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RTECS
RZ9450000
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Synonyms & Trade Names
Pentane, normal-Pentane
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DOT ID & Guide
1265 / 128
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Exposure
Limits
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NIOSH REL: TWA 120 ppm (350 mg/m3) C 610 ppm (1800 mg/m3) [15-minute]
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OSHA PEL†: TWA 1000 ppm (2950 mg/m3)
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IDLH
1500 ppm [10%LEL]
See: 109660
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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
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BP: 97°F
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FRZ: -202°F
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Sol: 0.04%
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VP: 420 mmHg
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IP: 10.34 eV
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Sp.Gr: 0.63
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Fl.P: -57°F
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UEL: 7.8%
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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 |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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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
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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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 |
