CS gas is not a chemical means of restraining a person.
Gray
P J
PJ
D006801:Humans; D001523:Mental Disorders; D012149:Restraint, Physical; D013665:Tear Gases; D009763:o-Chlorobenzylidenemalonitrile
D013665:Tear Gases; D009763:o-Chlorobenzylidenemalonitrile