… of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than …
Explanatory notes
… of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than … which ignite spontaneously. Used with calcium carbide for naval signals (self‑igniting flares for buoys). (3) Zinc … also includes : (1) Liquid air from which rare gases have been removed. (2) Compressed air. (E) AMALGAMS, …