[Natural Law]

I've used CS for similar purposes and the secondary properties of the material and delivery systems cannot be ignored or excused. CS agents are converted to a gaseous form by a high temperature combustion process. The intense heat has incendiary affects and the combustion produces toxins both from the housings and the combustion of any materials in contact with the combustion. Those trained in the usage, even if not knowledgeable in the chemistry, have to know this for personal safety if nothing else. Claims that the BATF and FBI were victims of events beyond their control are pure Bravo Sierra.

[lastchance]

From CDC website is an online guide to hazardous chemicals.

This is on CS gas http://www.cdc.gov/niosh/npg/npgd0378.html