PENTANE†
Chemical Identification | |
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CAS # | 109-66-0 |
Formula |
C₅H₁₂ |
Synonyms |
n-pentane; normal pentane; amyl hydride |
Physical Properties | |||
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Physical description | Colorless liquid with a gasoline-like odor. | ||
Boiling point | 97°F | Molecular weight | 72.2 |
Freezing point/melting point | -202°F | Vapor pressure | 420 mmHg |
Flash point | -57°F | Vapor density | 2.48 |
Specific gravity | 0.63 | Ionization potential | 10.34 eV |
Lower explosive limit (LEL) | 1.5% | Upper explosive limit (UEL) | 7.8% |
NFPA health rating | 1 | NFPA fire rating | 4 |
NFPA reactivity rating | 0 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Monitoring Methods Used by OSHA | ||||||
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Analyte code (IMIS no.) | 1990 | |||||
Sampling group | OVSG-1 | |||||
Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] | |||||
Sampling time* | 45 min |
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Sampling volume (TWA)* | 2.25 L |
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Sampling flow rate (TWA)* | 0.05 L/min |
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Sampling volume (STEL/Peak/C)* | ||||||
Sampling flow rate (STEL/Peak/C)* | ||||||
Analytical method instruments | GC-FID | |||||
Method reference | OSHA 5000 (fully validated) | |||||
Notes | ||||||
Special requirements |
* 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 | |
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Sampler/Sampling media |
Bulk Method |
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On-Site Screening Techniques | ||||||
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Device | ||||||
Model/Type | ||||||
Sampling information (see manufacturer instructions) |
Exposure Limits | |||||||
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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 |
1000 ppm (2950 mg/m³) |
REL-TWA |
120 ppm (350 mg/m³) |
TLV-TWA |
1000 ppm [2013] |
PEL-TWA |
600 ppm (1800 mg/m³) |
PEL-STEL |
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REL-STEL |
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TLV-STEL |
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PEL-STEL |
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PEL-C |
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REL-C |
610 ppm (1800 mg/m³) [15 min] |
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:
See 29 CFR 1910.1000 Table Z-1. OSHA Construction and Maritime Industry PEL is 500 ppm (1500 mg/m³) as an 8-hr TWA. See 29 CFR 1926.55 Appendix A and 29 CFR 1915.1000 Table Z-Shipyards. |
Notes:
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Notes:
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Notes:
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Health factors: See NIH-NLM PubChem. | IDLH |
1500 ppm |
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Carcinogenic classifications: Not listed |
Notes:
10% of LEL |
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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-Pentane NIOSH: Pocket Guide to Chemical Hazards - n-Pentane Literature References
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Last Updated Date : 04/13/2021