Fire safety in your home or office is always a priority. However, purchasing fire-resistant, prefabricated cabinets can be a costly venture. Save a few dollars and build your own cabinet--or purchase one that isn't fireproof--and apply your own, homemade fire-resistant coating.
You will need 1/2 cup of zinc chloride purchased from a grain and feed dealer, 1/4 cup of ferric chloride purchased from a chemical supply house, 3 tbsp of boric acid from a drugstore and 3 tbsp of ammonium phosphate from a garden supply store. You will also need 2 quarts of water.
Once you have your cabinets built and/or installed into your home or office, it's time to coat the wood with the fire-resistant solution. The mixture is to be applied over the final coating of paint or stain you apply to the cabinets. Dissolve all of the ingredients in the water and spray or brush the solution over the wood. Let dry and apply once or twice more.
No matter how much you fireproof your cabinets, it's important to remember that wood is still wood and will inevitably burn. The fire-resistant coating will make your cabinets difficult to burn, but if exposed to an open flame for long enough, it will eventually catch fire. The coating will give you more time to enact other fire safety protocol, such as using a fire extinguisher to put out the fire.