Tags: Chemical Compound, Chemical Substance.
Oxalic anhydride or ethanedioic anhydride also called oxiranedione is a hypothetical organic compound with the formula C2O3 which can be viewed as the anhydride of oxalic acid or the two-fold ketone of ethylene oxide. It is an oxide of carbon (an oxocarbon).The simple compound apparently has yet to be observed (as of 2009). In 1998 however P.