A deadly poison, Saarix-5 is a nerve gas. It is quick acting, but also fairly quick to disperse, as it oxidises on exposure to the air. It is almost universally deadly to all species exposed to it, including humans, Bellidos, Cimmaheen, Juriani and Halkas.
Saarix-5 is also able to be stored as an inert solid, in which form it is fairly safe, and can safely be handled with bare skin. Such forms are often used to smuggle the gas through checkpoints, usually with some sort of quick detonation device attached to allow its use.