PERFLUOROISOBUTYLENE

Chemical Identification
Chemical Identification
CAS # 382-21-8
Formula
 

C₄F₈

Synonyms
 

octafluoroisobutene; PFIB; octafluoro-sec-butene; 1,1,3,3,3-Pentafluoro-2-trifluoromethyl-1-propene

Physical Properties
Physical Properties
Physical description Colorless, odorless gas at room temp. When heated to decomposition it emits toxic fumes of hydrogen fluoride.
Boiling point 44.6°F Molecular weight 200.03
Freezing point/melting point -202°F Vapor pressure 1740 mmHg
Flash point Vapor density 6.3
Specific gravity 1.592 Ionization potential
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
Monitoring Methods Used by OSHA
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.

Wipe Method
Wipe Method
Sampler/Sampling media
 

 

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
 

 

REL-TWA
 

 

TLV-TWA
 

 

PEL-TWA
 

 

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

0.01 ppm [1989]

PEL-C
 

0.01 ppm (0.082 mg/m³)

Skin notation
 

NA

Skin notation
 

NA

Skin notation
 

N

Skin notation
 

N

Notes:
 

Not established

Notes:
 

Not established

Notes:
 

 

Notes:
 

 

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

 

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

--/0.1 ppm/0.3 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Not listed

NIOSH: Pocket Guide to Chemical Hazards - Not listed

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Perfluoroisobutylene. See annual publication for most recent information.

Last Updated Date : 01/08/2021