Since 1905, the Alsop process had used nitrogen peroxide, which made wheat flour snow white, but removed the nutrients.

There, he accidentally inhaled nitrogen peroxide gas, which affected his health for the remainder of his life.

Atop these were laid oval copper pipes carrying a solution of glycerine with ether, nitrogen peroxide and water.

Nitration of styryl ketones with nitrogen peroxide leads to the corresponding α-nitroethylenic ketones in good yield.

However this decomposes rapidly: Xe(NO) Xe + ONOONO (an unstable nitrogen peroxide)