ETHYL BENZENE†

Chemical Identification
Chemical Identification
CAS # 100-41-4
Formula

C₈H₁₀

Synonyms

ethylbenzol; phenylethane

Physical Properties
Physical Properties
Physical description Colorless liquid with an aromatic odor.
Boiling point 277°F Molecular weight 106.2
Freezing point/melting point -139°F Vapor pressure 7 mmHg
Flash point 55°F Vapor density 3.66
Specific gravity 0.87 Ionization potential 8.76 eV
Lower explosive limit (LEL) 0.8% Upper explosive limit (UEL) 6.7%
NFPA health rating 2 NFPA fire rating 3
NFPA reactivity rating 0 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.) 1080 1080
Sampling group OVSG-1
Sampler/Sampling media CSC tube (100/50 mg) [SKC 226-01] SKC 575-002 Passive Sampler [SKC 575-002]
Sampling time*

240 min

 

240 min

Sampling volume (TWA)*
 

12 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 GC-FID
Method reference OSHA 5000 (fully validated) OSHA 1002 (fully validated)
Notes
 

 

 

To obtain sampling and analytical error similar to that available with active sampling, knowledge of the atmospheric pressure and temperature are required, and these should be obtained using NIST-traceable devices. If that is not possible, temperature is assumed to be 22.2 °C, and the atmospheric pressure is estimated based on the elevation of the sampling location. When estimates are used in place of traceable measurements the sampling and analytical error associated with passive sampling is substantially increased, and this makes it more difficult to demonstrate overexposures after considering the 95% lower confidence limit.

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
 

 

Bulk Method
Bulk Method
 

 

On-Site Screening Techniques
On-Site Screening Techniques
Device Detector tube Dräger Matheson-Kitagawa
Model/Type Gastec 122, 122L, 122DL Ethyl Benzene 30/a, 6728381 8014-179S
Sampling information
(see manufacturer instructions)
See mfr instructions 6 strokes; approx 10-400 ppm range; uncertainty 16% Follow mfr 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
 

100 ppm (435 mg/m³)

REL-TWA
 

100 ppm (435 mg/m³)

TLV-TWA
 

20 ppm [2021]

PEL-TWA
 

100 ppm (435 mg/m³)

PEL-STEL
 

 

REL-STEL
 

125 ppm (545 mg/m³)

TLV-STEL
 

 

PEL-STEL
 

125 ppm (545 mg/m³)

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Skin notation
 

N

Notes:
 

See 29 CFR 1910.1000 Table Z-1.

Notes:
 

 

Notes:
 

BEI®, OTO (ototoxicant)

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

800 ppm

Carcinogenic classifications: IARC-2B, TLV-A3, EPA-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 - Ethylbenzene

NIOSH: Pocket Guide to Chemical Hazards - Ethyl benzene

Literature References

 

Last Updated Date : 04/14/2021