Dioxin is a heterocyclic organic compound with the chemical formula C4H4O2. There are two isomers, 1,2-dioxin (or o-dioxin) and 1,4-dioxin (or p-dioxin). Their chemical structures are shown at right. The ortho isomer 1,2-dioxin is very unstable due to its peroxide-like characteristics. The known properties of 1,4-dioxin are listed in the infobox to the right. | Section2 = | Section7 = | Section8 = }} 1,4-dioxin can be prepared by cycloaddition, namely by the Diels-Alder reaction. Other meanin… (More on Dioxin)