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Hydrofluorosilicic Acid

Hydrofluorosilicic acid is a chemical often known by other names like fluorosilicic acid and fluosilicic acid. It’s often abbreviated to HSA or FSA. The acid is a colorless chemical that is most commonly used in water fluoridation at water treatment plants, metal sterilization, electroplating, animal hide tanning, and glass etching.

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