HEPTACHLOR†

Chemical Identification
Chemical Identification
CAS # 76-44-8
Formula
 

C₁₀H₅Cl₇

Synonyms
 

1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene

Physical Properties
Physical Properties
Physical description White to light-tan crystals with a camphor-like odor.
Boiling point 293°F (decomposes) Molecular weight 373.4
Freezing point/melting point 203°F Vapor pressure 0.0003 mmHg at 77°F
Flash point Vapor density
Specific gravity 1.66 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.) 1369
Sampling group
Sampler/Sampling media OSHA versatile sampler (OVS-2) - 13 mm XAD-2 tube (270/140 mg) with GFF enclosed [SKC 226-30-16]
Sampling time*
 

 

Sampling volume (TWA)*
 

60 L

Sampling flow rate (TWA)*
 

 1 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments GC-ECD
Method reference OSHA PV2029 (partially 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
 

Limit the amount of bulk submitted to 1 g or 1 mL.

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
 

0.5 mg/m³

REL-TWA
 

0.5 mg/m³

TLV-TWA
 

0.05 mg/m³ [1990]

PEL-TWA
 

0.005 mg/m³

PEL-STEL
 

 

REL-STEL
 

 

TLV-STEL
 

 

PEL-STEL
 

 

PEL-C
 

 

REL-C
 

 

TLV-C
 

 

PEL-C
 

 

Skin notation
 

Y

Skin notation
 

Y

Skin notation
 

Y

Skin notation
 

Y

Notes:
 

See 29 CFR 1910.1000 Table Z-1.

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
 

35 mg/m³

Carcinogenic classifications: IARC-2B, NIOSH-Ca, TLV-A3, EPA-B2 Notes:
 

Ca

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

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Heptachlor

NIOSH: Pocket Guide to Chemical Hazards - Heptachlor

Literature References

 
  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Heptachlor [76-44-8] and Heptachlor epoxide [1024-57-3]. See annual publication for most recent information.
  • Agency for Toxic Substances and Disease Registry (ATSDR): Draft toxicological profile for heptachlor and heptachlor epoxide. Atlanta: ATSDR, (September) 2005, 177 pp.
  • International Agency for Research on Cancer: Chlordane and Heptachlor (Group 2B). IARC Summaries & Evaluations, Vol 79, 2001.
  • EPA Air Toxics Website: Heptachlor. U.S. Environmental Protection Agency Technology Transfer Network.
  • Pohanish, R.P. (editor): Heptachlor. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1225-1227.
  • Quintana, P.J.E., et al.: Adipose tissue levels of organochlorine pesticides and polychlorinated biphenyls and risk of non-Hodgkin's lymphoma. Environ. Health Perspect. 112(8): 854-861, 2004.

Last Updated Date : 01/29/2021