Tags: Chemical Compound, Chemical Substance.
Lactic acid O-carboxyanhydride (lac-OCA) is an organic compound. It is used as a monomer equivalent to lactic acid or lactide in the preparation of poly(lactic acid). When this monomer undergoes ring-opening polymerization one equivalent of carbon dioxide gas is released for every lactic acid unit incorporated into the polymer: This compound is prepared by treatment of lactic acid or its salts with phosgene or one of its equivalents e.g. diphosgene.
