It's state changes are opposites. For example, if you heat it it turns to a solid, and if you cool it it turns to a gas (instead of vice versa)
It is also used as paint. Color it with the deco layer ("B" key) and it will transfer it's color to the elements it touches.

@Neospector (View Post)
i don't get this element either and i dont think it useful at all

it has opposite state of changes (great for bomb shelters because it hardens when hot) and also acts as a dye when you set a color to it using the decoration editor

@theopfor (View Post)
When colored, yes.

@theopfor (View Post)

surfcash:

it has opposite state of changes (great for bomb shelters because it hardens when hot) and also acts as a dye when you set a color to it using the decoration editor

Heat it up and it will become a solid. Cool it down and it will become a gas. ^^

@theopfor (View Post)
yep, there is an example on the front page of the game, its a spray can.