Self-defense spray
Self-defense spray means an aerosol or non-pressurized device that:
(1) Is intended to have an irritating or incapacitating effect on a person or animal; and
(2) Meets no hazard criteria other than for Class 9 (for example, a pepper spray; see § 173.140(a) of this subchapter) and, for an aerosol, Division 2.1 or 2.2 (see § 173.115 of this subchapter), except that it may contain not more than two percent by mass of a tear gas substance (e.g., chloroacetophenone (CN) or 0-chlorobenzylmalonitrile (CS); see § 173.132(a)(2) of this subchapter.)