n-Heptane
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CAS
142-82-5
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CH3[CH2]5CH3
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RTECS
MI7700000
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Synonyms & Trade Names
Heptane, normal-Heptane
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DOT ID & Guide
1206 / 128
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Exposure
Limits
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NIOSH REL: TWA 85 ppm (350 mg/m3) C 440 ppm (1800 mg/m3) [15-minute]
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OSHA PEL†: TWA 500 ppm (2000 mg/m3)
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IDLH
750 ppm
See: 142825
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Conversion
1 ppm = 4.10 mg/m3
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Physical Description
Colorless liquid with a gasoline-like odor.
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MW: 100.2
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BP: 209°F
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FRZ: -131°F
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Sol: 0.0003%
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VP(72°F): 40 mmHg
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IP: 9.90 eV
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Sp.Gr: 0.68
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Fl.P: 25°F
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UEL: 6.7%
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LEL: 1.05%
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Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 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: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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Respirator Recommendations
NIOSH
Up to 750 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)
(APF = 10) Any supplied-air respirator
(APF = 50) Any self-contained breathing apparatus 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
Dizziness, stupor, incoordination; loss of appetite, nausea; dermatitis; chemical pneumonitis (aspiration liquid); unconsciousness
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Target Organs
Skin, respiratory system, central nervous system
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See also: INTRODUCTION
See ICSC CARD: 0657 |
