CUMENE†
| CAS # | 98-82-8 |
|---|---|
| Formula |
C₉H₁₂ |
| Synonyms |
isopropyl benzene; isopropylbenzene; 2-phenyl propane; cumol |
| Physical description | Colorless liquid with a sharp, penetrating, aromatic odor. | ||
|---|---|---|---|
| Boiling point | 306°F | Molecular weight | 120.2 |
| Freezing point/melting point | -141°F | Vapor pressure | 8 mmHg |
| Flash point | 96°F | Vapor density | |
| Specific gravity | 0.86 | Ionization potential | 8.75 eV |
| Lower explosive limit (LEL) | 0.9% | Upper explosive limit (UEL) | 6.5% |
| NFPA health rating | 2 | NFPA fire rating | 3 |
| NFPA reactivity rating | 1 | NFPA special instruction | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0780 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | CSC tube (100/50 mg) [SKC 226-01] | ||
| Sampling time* | 120 min |
||
| Sampling volume (TWA)* | 24 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 | OSHA PV2137 (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 | Wipe with charcoal pad, seal in glass vial for shipment. [3M 3500] |
|---|---|
| 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 |
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|---|---|---|---|---|---|---|---|
| PEL-TWA |
50 ppm (245 mg/m³) |
REL-TWA |
50 ppm (245 mg/m³) |
TLV-TWA |
50 ppm [1997] |
PEL-TWA |
50 ppm (245 mg/m³) |
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
Y |
Skin notation |
Y |
Skin notation |
N |
Skin notation |
Y |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
900 ppm |
|||||
| Carcinogenic classifications: EPA-CBD;D |
Notes:
10% of LEL |
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| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Cumene NIOSH: Pocket Guide to Chemical Hazards - Cumene Literature References
|
Last Updated Date : 12/22/2020