CUMENE†

Chemical Identification
Chemical Identification
CAS # 98-82-8
Formula

C₉H₁₂

Synonyms

isopropyl benzene; isopropylbenzene; 2-phenyl propane; cumol

Physical Properties
Physical Properties
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
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
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 Method
Wipe Method
Sampler/Sampling media

Wipe with charcoal pad, seal in glass vial for shipment. [3M 3500]

Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
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
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
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:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

900 ppm

Carcinogenic classifications: EPA-CBD;D Notes:

10% of LEL

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Cumene

NIOSH: Pocket Guide to Chemical Hazards - Cumene

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Cumene. See annual publication for most recent information.
  • EPA Air Toxics Website: Cumene. U.S. Environmental Protection Agency Technology Transfer Network.
  • Pohanish, R.P. (editor): Cumene. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 682-684.

Last Updated Date : 12/22/2020