Dicyclopentadiene

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. "The proposed TLVs arre expected to protect against CNS effects (tremors, loss of coordination, and unsteady gait) seen at 33 ppm in mice exposed for 9 days in one unpublished study." [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."

Biomedical References

Insufficient data

0.5 ppm

1 ppm

0.5 ppm

2.3 mm Hg

0.003 ppm

Odor Threshold High

0.01 ppm

LC50 (rat) = 660 ppm/4h

Explanatory Notes

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

may ignite at ambient temp

0.01 ppm

5 ppm

75 ppm

Acute solvent syndrome

Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion

Diseases

Occupational diseases associated with exposure to this agent:

• Solvents, acute toxic effect