A mixture of chemicals can be used to make clothing fire resistant. While the treated garment will be fire resistant in some way, don't rely on it to keep your skin safe from fire. When it comes to fire, the best precaution is to stay out of it. A fire retardant cloth is best left for situations where it might catch on fire, such as hanging next to a fire source (lamp, fireplace). But it seems that some sources (see below) do not consider this a bad idea in relation to clothing. Look for information yourself and use your common sense.
Steps
For a fireproof fabric, choose a sunny day so you can dry it in the sun or on your porch instead of sniffing the chemicals indoors.
Method 1 of 6: Formula using aluminum sulfate

Step 1. In a large saucepan, mix 453 g of aluminum sulfate with 470 ml of hot tap water
To do this, choose a saucepan that has enough room for the fabric.

Step 2. Select the fabric you want to make fireproof
Put it in a saucepan and wet it.

Step 3. Pull out the completely wet cloth
Place it in an airtight plastic basket and take it outside. Hang on a rope, floor hanger, or place on a basket.

Step 4. Once it is dry, you can use it
It will be a little stiffer compared to its original state, but if you bend it a little, it will take its shape.
Method 2 of 6: Formula using ammonium chloride and ammonium phosphate

Step 1. In a large bowl, combine 200 g of ammonium chloride and 940 ml of water

Step 2. Add 100 g of ammonium phosphate and mix

Step 3. Place the cloth in a pot and completely submerge in the solution as above
Dry as described above.
Method 3 of 6: Borax Formula
This method is recommended for "fabrics used as stage décor and artificial silk and natural fabrics."

Step 1. Mix in a large container 6 parts / 2, 72 kg borax, 5 parts / 2, 27 kg boric acid, 100 parts / 54.5 liters of water

Step 2. Soak the cloth completely in the solution
Repeat the procedure if necessary. Wait until dry.
Method 4 of 6: Another Borax Option
The fabric using this option is softer, more flexible and microorganisms do not grow on it.

Step 1. In a large container, mix 7 parts / 3, 1 kg of borax, 3 parts / 1.3 kg of boric acid, 100 parts / 45 liters of water

Step 2. Follow the above steps
In the case of rayon and light fabrics, it is recommended to use 64 liters of water.
Method 5 of 6: Sodium Silicate Formula
Use gloves for this method, as soluble glass is corrosive and toxic.

Step 1. Mix 30 ml of soluble glass (sodium silicate) with 270 ml of water

Step 2. Before placing the fabric in this solution, wash and rinse well

Step 3. Let it get wet well, then hang to dry
Method 6 of 6: Method from the National Fire Protection Association (USA)
Another option using borax.

Step 1. In a large container, mix 255 g of boron powder and 120 ml of boric acid in 3.8 liters of water

Step 2. Stir well

Step 3. Saturate or spray the fabric
Dry without squeezing.
Advice
- Howtomakestuff advises using the second formula for "fabrics, tents, awnings and other textiles". However, pay attention to the warnings from wikiHow.
- The chemicals used should be available in pharmacies, chemical warehouses, or even gardening stores.
Warnings
- Keep all chemicals away from children and animals.
- This method is recommended for fabrics on objects other than clothing. It is probably best to purchase professional fireproof clothing, especially if you work in an area where fire is considered a risk factor.