• 2,4,6-Metheno-2H-cyclopenta(4,5)pentaleno(1,2-b)oxirene, 2a,3,3,4,5,5a-hexachlorodecahydro-
Beige crystals or white powder.
Photodecomposition product of dieldrin.

Registry Numbers and Inventories.
RTECS class
Tumorigen; Mutagen

Formula mass
Melting point, °C
194 - 195

Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
If Tyvek-type disposable protective clothing is not worn during handling of this chemical, wear disposable Tyvek-type sleeves taped to your gloves.
Wear a NIOSH-approved half face respirator equipped with a combination filter cartridge, i.e. organic vapor/acid gas/HEPA (specific for organic vapors, HCl, acid gas, SO2 and a high efficiency particulate filter).
Small spills/leaks
If a spill of this chemical occurs, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with acetone and transfer the dampened material to a suitable container. Use absorbent paper dampened with acetone to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with acetone followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
No data.
React with acids, bases, and oxidizing and reducing agents.

Fire fighting
Fires involving this material can be controlled with a dry chemical, carbon dioxide or a Halon extinguisher.
Fire potential
This material is probably combustible.

Exposure effects
See inhalation.
Symptoms of exposure to a similar compound may include malaise, headache, nausea, vomiting, dizziness, tremors, clonic and tonic convulsions, coma and respiratory failure. It may cause hyperexcitability and hyperirritability. It may also cause involuntary muscular movements, epileptic convulsions with loss of consciousness, blurred vision and nystagmus accompany ing incoordination. Other symptoms include congestion, edema, scattered petechial hemorrhages in the lungs, kidneys and brain, degenerative changes are found in the hepatic cells and renal tubules, ataxia, central nervous system depression, proteinuria, hematuria, anuria, cognitive and emotional deterioration, severe impairment of memory and gross impairment of visual motor coordination. It may cause sweating, insomnia and bad dreams. It may also cause myoclonic limb jerks.
See inhalation.
See inhalation

First aid
If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. MMEDIATELY transport the victim to a hospital.
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.