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]

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TIH

Yes

TLV (ACGIH)

0.01 ppm

Vapor Pressure

0.08 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]

Reference Link

ATSDR - ToxFAQs - Hexachlorocyclopentadiene (HCCPD)

Adverse Effects
Toxic Pneumonitis

Yes

Hepatotoxin

Hepatotoxin, Secondary

Dermatotoxin

Skin Burns

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: