How do you make fireproof fabric?

Paper can be made fireproof by dipping it in a saturated solution of alum in water for about 2-5 minutes and then removing it, drying and repeating the procedure 2-3 times.

People claim that it has no effect on its quality but crystals of alum do prove to be a problem when writing on it. The paper also becomes a bit brittle.

The paper cannot be made hundred percent fireproof but the method works to some extent.

I suggest you simply keep the paper safe from any fire hazards.