ENDRIN†

Chemical Identification
Chemical Identification
CAS # 72-20-8
Formula
 

C₁₂H₈Cl₆O

Synonyms
 

1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo,endo-5,8-dimethanonaphthalene; hexadrin

Physical Properties
Physical Properties
Physical description Colorless to tan, crystalline solid with a mild, chemical odor.
Boiling point 245°C (decomposes) Molecular weight 380.9
Freezing point/melting point 473°F (decomposes) Vapor pressure low
Flash point 80°F (commercial product may contain flammable liquid) Vapor density
Specific gravity 1.7 Ionization potential
Lower explosive limit (LEL) 1.1% (commercial product) Upper explosive limit (UEL) 7% (commercial product)
NFPA health rating 2 NFPA fire rating 0
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.) 1017
Sampling group
Sampler/Sampling media 0.8 µm Cellulose ester membrane + Chromosorb 102, (100/50 mg) [SKC 225-5 & SKC 226-107]
Sampling time*
 

 

Sampling volume (TWA)*
 

12-400 L

Sampling flow rate (TWA)*
 

0.5-1 L/min

Sampling volume (STEL/Peak/C)*
 

 

Sampling flow rate (STEL/Peak/C)*
 

 

Analytical method instruments GC-ECD
Method reference NIOSH 5519 (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
 

0.1 mg/m³

REL-TWA
 

0.1 mg/m³

TLV-TWA
 

0.1 mg/m³ [1979]

PEL-TWA
 

0.1 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:
 

 

Notes:
 

 

Notes:
 

 

Health factors:  See NIH-NLM PubChem. IDLH
 

2 mg/m³

Carcinogenic classifications: IARC-3, TLV-A4, EPA-D Notes:
 

 

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

 

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Endrin

NIOSH: Pocket Guide to Chemical Hazards - Endrin

Literature References

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

Last Updated Date : 01/29/2021