Anhydride

an oxide which combines with to form an acid. Anhydrides may therefore regarded as acids deprived of water, the latter e ential for the exhibition of those proper which are characteristic of acids. Thus, a of an anhydride in ether, or some other solvent, is not capable of reddening paper [Ex. Sulphuric anhydride, which with water to form sulphuric acid H,O es ] [SO].