Label abbreviations descriptions

2-ETHYLHEXANOIC ACID

Chemical Identification
CAS # 149-57-5
Formula
 

C₈H₁₆O₂
Synonyms
 

⍺-ethylcaproic acid; ⍺-ethylhexanoic acid; 2-bubylbutanoic acid; butylethylacetic acid; 2-ethyl-1-hexanoic acid; 2-ethylcaproic acid; ethylhexanoic acid; ethylhexoic acid

Physical Properties
Physical description A colorless to light yellow liquid with a mild odor.
Boiling point 442°F Molecular weight 144.21
Freezing point/melting point -117°F Vapor pressure
Flash point 260°F Vapor density
Specific gravity 0.903 Ionization potential
Lower explosive limit (LEL) 1.04% at 275°F Upper explosive limit (UEL) 8.64% at 370.4°F
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)
Sampling group
Sampler/Sampling media
Sampling time*
Sampling volume (TWA)*
Sampling flow rate (TWA)*
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments
Method reference
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
 

 
Bulk Method
 

 

On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)

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
 

 

 REL-TWA
 

 

 TLV-TWA
 

5 mg/m³ (inhalable fraction and vapor), [2006]

 PEL-TWA
 

 
PEL-STEL
 

 

 REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

NA

 Skin notation
 

N

 Skin notation
 

NA
Notes:
 

Not established

 Notes:
 

Not established

 Notes:
 

 

 Notes:
 

Not established
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: Notes:
 

 
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
 

 

Additional Resources and Literature References

Last Updated Date : 12/15/2020