volatile substance

Fixed, solid matter might be signified by an earthbound toad, or a volatile substance by a bird or feathers.

Many a superhero origin story involves exposure to a volatile substance — something dangerous, radioactive, caustic — that can be powerful if mastered, ruinous if uncontrolled.

“Time is of the essence, particularly with a volatile substance like condensate,” Steiner says.

“Time is of the essence, particularly with a volatile substance like condensate,” Steiner says.

Condensate is a toxic and highly volatile substance, Boxall said, and that poses both advantages and disadvantages for the rescue and cleanup crews.