Label abbreviations descriptions

HEXACHLOROCYCLOPENTADIENE

Chemical Identification
CAS # 77-47-4
Formula

C₅Cl₆
Synonyms

HCCPD; hexachloro-1,3-cyclopentadiene; 1,2,3,4,5,5-hexachloro-1,3-cyclopentadiene; perchlorocyclopentadiene

Physical Properties
Physical description Pale-yellow to amber-colored liquid with a pungent, unpleasant odor.
Boiling point 462°F Molecular weight 272.8
Freezing point/melting point 16°F Vapor pressure 0.08 mmHg at 77°F
Flash point Vapor density 9.4
Specific gravity 1.71 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
Analyte code (IMIS no.) 1374
Sampling group
Sampler/Sampling media Sorbent tubes, 2 Porapak-T tubes [SKC 226-116A]
Sampling time*
Sampling volume (TWA)*

0.25 L - 90 L
Sampling flow rate (TWA)*

0.01-0.2 L/min
Sampling volume (STEL/Peak/C)*
 

 
Sampling flow rate (STEL/Peak/C)*
 

 
Analytical method instruments GC-ECD
Method reference NIOSH 2518 (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.

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
 

0.01 ppm (0.1 mg/m³)

 TLV-TWA
 

0.01 ppm [1990]

 PEL-TWA
 

0.01 ppm (0.11 mg/m³)
PEL-STEL
 

 

 REL-STEL
 

 

 TLV-STEL
 

 

 PEL-STEL
 

 
PEL-C
 

 

 REL-C
 

 

 TLV-C
 

 

 PEL-C
 

 
Skin notation
 

NA

 Skin notation
 

N

 Skin notation
 

N

 Skin notation
 

N
Notes:
 

Not established

 Notes:
 

 

 Notes:
 

 

 Notes:
 

 
Health factors:  See NIH-NLM PubChem. IDLH
Carcinogenic classifications: TLV-A4 Notes:
 

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

 

Additional Resources and Literature References

Last Updated Date : 01/29/2021