Tear gas, formally known as a lachrymatory agent or lachrymator (from lacrima meaning "tear" in Latin), is a non-lethal chemical weapon that stimulates the corneal nerves in the eyes to cause tears, pain, and even blindness. Common lachrymators include OC, CS, CR, CN (phenacyl chloride), nonivamide, bromoacetone, xylyl bromide and syn-propanethial-S-oxide (from onions).

Carbon monoxide

Its CN or CS,

Tear gas is used both by the police for crowd control, and by individuals for self defense. According to "Tear Gas, With an Emphasis on Self Defense," there are three kinds of tear gas a consumer can buy:

CS (chlorobenzylidenemalononitrile)
CN (chloroacetophenone) - often sold as Mace
Pepper spray - made from chili peppers mixed with a vehicle like corn oil
CS is stronger than CN but wears off more quickly.

Tear gas that you hear about on the news, in the form of CN or CS, is often used by law enforcement when they are faced with a combative crowd. The tear gas is launched in the form of grenades or aerosol cans so that the liquid becomes an aerosol. Both CN and CS are irritants -- they irritate mucous membranes in the eyes, nose, mouth and lungs, and cause tearing, sneezing, coughing, etc.

Pepper spray is an inflammatory agent that causes inflammation in the eyes, nose and mouth. Its effect is more debilitating, but you have to hit someone with it directly for it to be eff ...more

VTear gas is used both by the police for crowd control, and by individuals for self defense. According to "Tear Gas, With an Emphasis on Self Defense," there are three kinds of tear gas a consumer can buy:
CS (chlorobenzylidenemalononitrile)
CN (chloroacetophenone) - often sold as Mace
Pepper spray - made from chili peppers mixed with a vehicle like corn oil
CS is stronger than CN but wears off more quickly.
Tear gas that you hear about on the news, in the form of CN or CS, is often used by law enforcement when they are faced with a combative crowd. The tear gas is launched in the form of grenades or aerosol cans so that the liquid becomes an aerosol. Both CN and CS are irritants -- they irritate mucous membranes in the eyes, nose, mouth and lungs, and cause tearing, sneezing, coughing, etc.

Ear gas is used both by the police for crowd control, and by individuals for self defense. According to "Tear Gas, With an Emphasis on Self Defense," there are three kinds of tear gas a consumer can buy:

CS (chlorobenzylidenemalononitrile)
CN (chloroacetophenone) - often sold as Mace
Pepper spray - made from chili peppers mixed with a vehicle like corn oil

CS is stronger than CN but wears off more quickly.

Tear gas that you hear about on the news, in the form of CN or CS, is often used by law enforcement when they are faced with a combative crowd. The tear gas is launched in the form of grenades or aerosol cans so that the liquid becomes an aerosol. Both CN and CS are irritants -- they irritate mucous membranes in the eyes, nose, mouth and lungs, and cause tearing, sneezing, coughing, etc.

Pepper spray is an inflammatory agent that causes inflammation in the eyes, nose and mouth. Its effect is more debilitating, but you have to hit someone with it directly for ...more

Agents commonly used as tear gas include CN or Mace, which is sprayed in a weak water solution, CS which is burned, and produces symptoms as long as the victim is in the smoke, and CR which is more potent and longer lasting. Another agent in personal protection spray canisters is capsicum powder, the active ingredient in hot peppers...!

Tear gas, or lachramatory agent, refers to any of a number of chemical compounds that cause tears and pain in the eyes and sometimes temporary blindnes.......

thank you

Mustard gas and chloropicrin is used as a tear gas.

Tear gas is actually not a gas, but the vapor of a crystal. The two most common are CN and CS. When heated, or blown about in a fine powder, they cause a burning sensation sensation to the skin, eyes, and lungs. OC is an extract of the oil found in hot peppers, and is commonly used in self defense sprays.