HEPTANE†
| Chemical Identification | |
|---|---|
| CAS # | 142-82-5 |
| Formula |
C₇H₁₆ |
| Synonyms |
n-heptane (normal heptane), dipropyl methane |
| Physical Properties | |||
|---|---|---|---|
| Physical description | Colorless liquid with a gasoline-like odor. | ||
| Boiling point | 209°F | Molecular weight | 100.2 |
| Freezing point/melting point | -131°F | Vapor pressure | 40 mmHg |
| Flash point | 25°F | Vapor density | |
| Specific gravity | 0.68 | Ionization potential | 9.90 eV |
| Lower explosive limit (LEL) | 1.05% | Upper explosive limit (UEL) | 6.7% |
| NFPA health rating | 1 | NFPA fire rating | 3 |
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Monitoring Methods Used by OSHA | ||||||
|---|---|---|---|---|---|---|
| Analyte code (IMIS no.) | 1371 | |||||
| Sampling group | OVSG-1 | |||||
| Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] | |||||
| Sampling time* |
80 min |
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| Sampling volume (TWA)* |
4 L |
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| Sampling flow rate (TWA)* |
0.05 L/min |
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| Sampling volume (STEL/Peak/C)* |
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| Sampling flow rate (STEL/Peak/C)* |
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| Analytical method instruments | GC-FID | |||||
| Method reference | OSHA 5000 (fully validated) | |||||
| Notes |
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| Special requirements |
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* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Method | |
|---|---|
| Sampler/Sampling media |
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| Bulk Method |
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| On-Site Screening Techniques | ||||||
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| Device | ||||||
| Model/Type | ||||||
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Sampling information (see manufacturer instructions) |
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| Exposure Limits | |||||||
|---|---|---|---|---|---|---|---|
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
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| PEL-TWA |
500 ppm (2000 mg/m³) |
REL-TWA |
85 ppm (350 mg/m³) |
TLV-TWA |
400 ppm [1979] |
PEL-TWA |
400 ppm (1600 mg/m³) |
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
500 ppm [1979] |
PEL-STEL |
500 ppm (2000 mg/m³) |
| PEL-C |
|
REL-C |
440 ppm (1800 mg/m³) [15 minutes] |
TLV-C |
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PEL-C |
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| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: |
Notes:
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Notes:
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Notes:
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| Health factors: See NIH-NLM PubChem. | IDLH |
750 ppm |
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| Carcinogenic classifications: EPA-D |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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| Additional Resources and Literature References |
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NOAA: CAMEO Chemicals - N-Heptane NIOSH: Pocket Guide to Chemical Hazards - n-Heptane Literature References
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Last Updated Date : 04/13/2021