Dicyclopentadiene (DCPD)

Dicyclopentadiene (DCPD for short), molecular formula: C10H12, also known as dicyclopentadiene, is a dimer generated by the Diels-Alder reaction of cyclopentadiene, with two isomers, endo and exo.

Properties: colorless crystals, with a camphor-like odor. Relative density 0.979 (20/20℃). Boiling point 170℃ (decomposition). Freezing point 31.5℃. Refractive index nD (35℃) 1.5061. Flash point 32.22℃. Autoignition point 680℃. Soluble in alcohol. This product has two isomers, α and β. The freezing point of the α isomer is 33℃, and the freezing point of the β isomer is 19.5℃. Dicyclopentadiene mainly contains the α isomer, with a boiling point of 170℃. Because this product contains double bonds, it is easy to undergo addition reactions and self-polymerization reactions.

Uses: Mainly used in the pharmaceutical industry.

Toxicity: This product is toxic, paralytic and locally irritating. Acute poisoning can cause coma. The oral LD50 of rats is 820mg/kg body weight, and the LD50 of rabbits absorbed through the skin is 6.72ml/kg body weight. The main pathological changes of rats poisoned by oral administration are extensive congestion and bleeding in the lungs, stomach, intestines, kidneys and bladder. Devices and equipment containers should be sealed, ventilation should be strengthened, and the maximum allowable concentration in the air is 5mg/m3. Operators should wear protective equipment. Those who suffer from acute poisoning should be moved to fresh air and treated according to general anesthetic drug poisoning.