CYCLOPENTADIENE†
| CAS # | 542-92-7 |
|---|---|
| Formula |
C₅H₆ |
| Synonyms |
1,3-cyclopentadiene |
| Physical description | Colorless liquid with an irritating, terpene-like odor. | ||
|---|---|---|---|
| Boiling point | 107°F | Molecular weight | 66.1 |
| Freezing point/melting point | -121°F | Vapor pressure | 400 mmHg |
| Flash point | 77°F (open cup) | Vapor density | |
| Specific gravity | 0.80 | Ionization potential | 8.56 eV |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0845 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | Chromosorb 104® (discontinued) | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 1-5 L |
||
| Sampling flow rate (TWA)* | 0.05 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-FID | ||
| Method reference | NIOSH 2523 (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 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 |
75 ppm (200 mg/m³) |
REL-TWA |
75 ppm (200 mg/m³) |
TLV-TWA |
0.5 ppm [2018] |
PEL-TWA |
75 ppm (200 mg/m³) |
| PEL-STEL | REL-STEL | TLV-STEL |
1 ppm [2018] |
PEL-STEL | |||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
750 ppm |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Cyclopentadiene NIOSH: Pocket Guide to Chemical Hazards - Cyclopentadiene Literature References
|
Last Updated Date : 01/12/2023