CYCLOPENTANE
| CAS # | 287-92-3 |
|---|---|
| Formula |
C₅H₁₀ |
| Synonyms |
pentamethylene |
| Physical description | Colorless liquid with a mild, sweet odor. | ||
|---|---|---|---|
| Boiling point | 121°F | Molecular weight | 70.2 |
| Freezing point/melting point | -137°F | Vapor pressure | 400 mmHg at 88°F |
| Flash point | <20°F | Vapor density | |
| Specific gravity | 0.75 | Ionization potential | 10.52 eV |
| Lower explosive limit (LEL) | 1.1% | Upper explosive limit (UEL) | 8.7% |
| NFPA health rating | 1 | NFPA fire rating | 3 |
| NFPA reactivity rating | 0 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | C619 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 4 L |
||
| Sampling flow rate (TWA)* | 0.2 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | NIOSH 1500 (partially 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 Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
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 |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA | REL-TWA |
600 ppm (1720 mg/m³) |
TLV-TWA |
1000 ppm [2021] |
PEL-TWA |
600 ppm (1720 mg/m³) |
|
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
|
Notes:
Not established |
Notes: |
Notes:
(EX) Explosion hazard: the substance is a flammable asphyxiant or excursions above the TLV could approach 10% of the LEL. |
Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Cyclopentane NIOSH: Pocket Guide to Chemical Hazards - Cyclopentane Literature References
|
Last Updated Date : 12/22/2020