HEXACHLOROBUTADIENE

Chemical Identification
Chemical Identification
CAS # 87-68-3
Formula
 

C₄Cl₆

Synonyms
 

HCBD; hexachloro-1,3-butadiene; 1,3-hexachlorobutadiene; perchlorobutadiene

Physical Properties
Physical Properties
Physical description Clear, colorless liquid with a mild, turpentine-like odor.
Boiling point 419°F Molecular weight 260.76
Freezing point/melting point -6°F Vapor pressure 0.2 mmHg
Flash point Vapor density 8.99
Specific gravity 1.675 Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 1
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.) H109
Sampling group
Sampler/Sampling media XAD-2 tube (100/50 mg) [SKC 226-30-04]
Sampling time*
 

 

Sampling volume (TWA)*
 

1-100 L

Sampling flow rate (TWA)*
 

0.05-0.2 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments GC-ECD
Method reference NIOSH 2543 (fully 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
 

 

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
 

0.02 ppm (0.24 mg/m³)

TLV-TWA
 

0.02 ppm [1979]

PEL-TWA
 

0.02 ppm (0.24 mg/m³)

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

NA

Skin notation
 

Y

Skin notation
 

Y

Skin notation
 

Y

Notes:
 

Not established

Notes:
 

CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: IARC-3, NIOSH-Ca, TLV-A3, EPA-C Notes:
 

Ca

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

1 ppm/3 ppm/10 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Hexachlorobutadiene

NIOSH: Pocket Guide to Chemical Hazards - Hexachlorobutadiene

Literature References

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

Last Updated Date : 12/31/2020