The restricted diene reacts violently. Both the diene and the dieneophile will be represented by a single molecule.
The best course of action is to switch to a chemical product with less inherent potential for contaminating the environment or exposing workers to it. Any unused material should be recycled or returned to the manufacturer or supplier for its specified usage. The chemical's influence on air quality, possible migration into soil or water, impacts on animal, aquatic, and plant life, and compliance with environmental and public health requirements must all be taken into account before disposal.
cyclopenta-1,3-diene is the IUPAC name of cyclopentadiene.
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