Tags: Chemical Compound, Chemical Substance.
Ethylene dione or ethylenedione also called dicarbon dioxide ethenedione or ethene 12-dione is the name given to a hypothetical chemical compound with the formula C2O2 or O=C=C=O. It is a dimer of carbon monoxide and belongs to the oxocarbon series. It can be thought of as ketene of glyoxylic acid (OHCCOOH).