Quelling the flames

What kind of flame retardants existed in 1927?

Borax 20 Mule Team

There was this product called 20 Mule Team Borax made in the States and ‘commonly available’ for usage as a household cleaner.

Borax, also known as sodium borate, sodium tetraborate, or disodium tetraborate, is an important boron compound, a mineral, and a salt of boric acid. It is usually a white powder consisting of soft colorless crystals that dissolve easily in water. Borax has a wide variety of uses. It is a component of many detergents, cosmetics, and enamel glazes. It is also used to make buffer solutions in biochemistry, as a fire retardant, as an anti-fungal compound for fiberglass, as an insecticide, as a flux in metallurgy, a texturing agent in cooking, and as a precursor for other boron compounds.

– as taken from the Wikipedia article here

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