Ethylenediaminetetraacetic acid is a strong chelating agent that binds and sequesters many metals, including the iron atoms at the core of blood's active ingredient, hemoglobin. To say that vampires have a particularly violent reaction to this chemical is putting it mildly. Blade uses a bandolier of throwing darts such as this one, each bearing a capsule of injectable EDTA, to defeat Deacon Frost after Frost's transformation into the powerful blood god La Magra.
Machined aluminum and glass, with some blue liquid remaining in the capsule.
From P Steinschneider. Originally from the film's assistant prop master.
