n-Heptane |
Synonyms & Trade Names Heptane, normal-Heptane |
CAS No. 142-82-5 |
RTECS No. MI7700000 |
DOT ID & Guide 1206 128 |
FormulaCH3[CH2]5CH3 |
Conversion 1 ppm = 4.10 mg/m3 |
IDLH 750 ppm
See: 142825 |
Exposure Limits NIOSH REL: TWA 85 ppm (350 mg/m3) C 440 ppm (1800 mg/m3) [15-minute]
OSHA PEL†: TWA 500 ppm (2000 mg/m3) |
Measurement Methods
NIOSH 1500;
OSHA 7
See: NMAM or OSHA Methods |
Physical Description Colorless liquid with a gasoline-like odor. |
MW: 100.2 |
BP: 209°F |
FRZ: -131°F |
Sol: 0.0003% |
VP(72°F): 40 mmHg |
IP: 9.90 eV |
Sp.Gr: 0.68 |
Fl.P: 25°F |
UEL: 6.7% |
LEL: 1.05% |
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| Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F. |
Incompatibilities & Reactivities Strong oxidizers |
Exposure Routes inhalation, ingestion, skin and/or eye contact |
Symptoms dizziness, stupor, incoordination; loss of appetite, nausea; dermatitis; chemical pneumonitis (aspiration liquid); unconsciousness |
Target Organs Skin, respiratory system, central nervous system |
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Personal Protection/Sanitation (See protection codes)
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 |
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 |
| See also: INTRODUCTION See ICSC CARD: 0657
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