A can of tear gas that just exploded
Tear gas is the name for a number of chemical compounds. They are not actually gases. They are fine powders or mists of liquid. The chemicals are acidic and cause pain in the eyes. Tear gas may cause temporary blindness for up to 45 minutes. Tear gas is commonly used by police to control crowds. Phenacyl chloride (CN) liquid and CS powder are two of the chemicals that are often found in tear gas. Pepper spray is another chemical compound that acts very similarly and is sometimes used to control crowds.
