Agent Name

Dicyclopentadiene

CAS Number

77-73-6

Formula

C10-H12

Major Category

Other Classes

Synonyms

1,3-CPD; 1,3-Cyclopentadiene, dimer; 3a,4,7,7a-Tetrahydro-4,7-methanoindene; 4,7-Methano-1H-indene, 3a,4,7,7a-tetrahydro-; 4,7-Methanoindene, 3a,4,7,7a-tetrahydro-; Bicyclopentadiene; Biscyclopentadiene; Cyclopentadiene dimer; Dicyclopentadiene; Dicyklopentadien [Czech]; Dimer cyklopentadienu [Czech]; Tricyclo(5.2.1.0)-3,8-decadiene; alpha-Dicyclopentadiene (endo form); [ChemIDplus] UN2048; UN1993; UN2929

Category

Aliphatics, Unsaturated

Description

Colorless, crystalline solid with a disagreeable, camphor-like odor; Note: A liquid above 90 degrees F; [NIOSH]

Sources/Uses

Used as a chemical intermediate for insecticides and other products; [ACGIH] Used as a monomer and curing agent in polymer production; [HSDB]

Comments

Exposed workers experienced headaches. [ACGIH] A skin, eye, and respiratory tract irritant; [ICSC] In animal experiments, calves are intoxicated at a dose of 250 mg/kg. [HSDB] See "Cyclopentadiene."

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

5 ppm

MAK

0.5 ppm

Vapor Pressure

1.4 mm Hg

Odor Threshold Low

0.003 ppm

Odor Threshold High

0.01 ppm

Lethal Concentration

LC50 (rat) = 660 ppm/4h

Explanatory Notes

Detection odor threshold from AIHA (mean = 0.011 ppm); Flash point = 32 deg C;

Flammability (NFPA)

3: May ignite at ambient temperature

Adverse Effects
Neurotoxin

CNS Solvent Syndrome

Hepatotoxin

Hepatotoxin, Secondary

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Chemical Information

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Biomedical References

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent: