Hexachlorocyclopentadiene
Agent Name
Hexachlorocyclopentadiene
CAS Number
77-47-4
Formula
C5-Cl6
Major Category
Toxic Gases & Vapors
Synonyms
1,2,3,4,5,5-Hexachloro-1,3-cyclopentadiene; 1,3-Cyclopentadiene, 1,2,3,4,5,5-hexachloro-; 1,3-Cyclopentadiene, hexachloro-; C 56; C-56; C56; Cyclopentadiene, hexachloro-; Graphlox; HRS 1655; Hexachlorcyklopentadien [Czech]; Hexachloro-1,3-cyclopentadiene; Hexachlorocyclopentadiene; Perchloro-1,3-cyclopentadiene; Perchlorocyclopentadiene; [ChemIDplus] UN2646
Category
Other Toxic Gases & Vapors
Description
Pale-yellow to amber-colored liquid with a pungent, unpleasant odor. [Note: A solid below 16 degrees F.]; [NIOSH]
Sources/Uses
Used in the manufacture of some chlorinated pesticides; [ACGIH]
Comments
Corrosive to skin; [Quick CPC] Contact with liquid may cause blistering of the skin. [CHRIS] Daily exposures to 0.34 ppm cause pulmonary edema as well as liver and kidney injury in experimental animals. Workers avoid exposure because of its odor and irritating properties. [ACGIH]
Biomedical References
Exposure Assessment
Skin Designation (ACGIH)
Insufficient data
TIH
Yes
TLV (ACGIH)
0.01 ppm
Vapor Pressure
0.06 mm Hg
Odor Threshold Low
0.15 ppm
Lethal Concentration
LC50 (rat) = 1.6 ppm/4h
Explanatory Notes
An odor threshold of 0.15 ppm has been reported. [ACGIH] VP from HSDB;
Reference Link #2
Adverse Effects
Toxic Pneumonitis
Yes
Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
Dermatotoxin
Skin burns
ACGIH Carcinogen
Not Classifiable
Diseases, Processes, and Activities Linked to This Agent
Diseases
Occupational diseases associated with exposure to this agent: