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Cyclohexanone oxime reacts violently with fuming sulfuric acid at temperatures 302° F. . Several explosions or violent decompositions have occurred during distillation of aldooximes, which may be attributable to the formation of peroxides of various types. This is especially the case in the presence of acid, Chem. Eng. News, 1974, 52(35), 3. A nickel catalyzed aldoxime rearrangement to an amide, went out of control after changing the solvent employed, J. Loss Prev., 1993, 6(2), 69.