no, chemical weapons such as gas were first used in WWI, starting with chlorine gas
Tear Gas and Mustard Gas
The basic constituent of Tear gas is phosgen gas, COCl2 (Carbonyl chloride) and laughing gas is nitrous oxide or N2O.
Ethers containing peroxides can be detonate as tear gas when heated. Unburned material may form powerful tear gas. When wet, also forms irritating formaldehyde gas.
Advantages of tear gas would have to be , it splits up large riot groups. Used by police.
tear gas
The best known tear gas is "CS" gas- this contains carbon, hydrogen, nitrogen and chlorine.
Chlorine, mustard gas and tear gas.
CS or tear gas used for training.
Yes, ammonia is not typically used in tear gas. Tear gas usually contains chemicals such as chloroacetophenone (CN) or chlorobenzylidenemalononitrile (CS) as the active ingredient to cause irritation to the eyes, respiratory system, and skin.
Xylyl Bromide (Tear Gas)
Tear gas, mustard gas, phosgene and chlorine gas.
From what I have heard, it is the same tear gas used for riots. Not lethal, but not much fun either.