Texas Gunpowder

In the UK, pepper spray is classified as a firearm:

In the United Kingdom, “Any weapon of whatever description designed or adapted for the discharge of any noxious liquid, gas or other thing” is classed as a section 5 firearm (Firearms Act 1968). The same act covers other prohibited weapons such as automatic firearms and rocket launchers, all of which can only be possessed by permission of the Home Secretary. Although legal for police officers, recent debates have arisen whether such a weapon should be legal for civilians as means of defensive purposes only. At present a number of legal alternative dye sprays are sold in the UK which have the effect of temporarily blinding the attacker but do not constitute noxious substances and so do not contravene this act.