MDF (Medium Density Fiberboard) is not fireproof, but it has a level of fire resistance due to its composition.
MDF is made from wood fibers and resins that are compressed under high pressure and heat, which creates a dense and solid material that is less flammable than regular wood.
However, MDF can still catch fire and burn if exposed to high temperatures for an extended period of time, so it is important to take precautions and treat it with fire retardant products if necessary.