It is used in the manufacture of effervescing steel, and the smelting and refining of light metals. It is also used in fluorination of drinking water, as a wood preservative, an adhesive preservative. An insecticide, a protective coating for metals, a pickle for steels and other metals, a flux for soldering and welding, as well as a flux and pacifier for ceramic, glass and porcelain enamel.

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