Is Silly String Flammable

Silly String, a colorful plastic string that exits in a liquid-type foam (we’ll get into that below), is not only very fun – it’s also very flammable.

What makes Silly String flammable?

Silly string is held by an aerosol can or spray, and these cans use a type of propellant to force materials out. The propellant itself may be flammable, as it can be composed of liquefied gas or another mixture.

What is Silly String made from?

Without talc, the string would be all plastic skin and no body. Made up of mostly magnesium, silicon, and oxygen, this absorbent mineral provides the resin with some guts. If you find an old can of Silly String in the back of your closet and it still works, thank these ingredients.