CN, tear gas
The physical state of CN is a solid powder. CN is described as having an odor similar to apple blossoms.
CN identifies the riot control agent popularly known as tear gas. CN quickly irritates the eyes and upper respiratory passages. In higher concentrations it causes copious tearing; a tingling sensation, irritation, burning, and pain of the nose and throat; and burning and itching on tender areas of the skin, especially areas wet by perspiration. High concentrations can cause blisters. The effects are similar to those of a sunburn and disappear in a few hours.