Hexafluorosilicic acid facts for kids

Hexafluorosilicic acid is a special kind of chemical compound that acts as an acid. Its chemical formula, or "recipe," is H₂SiF₆.

What is Hexafluorosilicic Acid?

This acid is made when hydrofluoric acid and silicon dioxide react together. It's often created as a side product when hydrofluoric acid is being produced.

How is it Used?

Hexafluorosilicic acid can be mixed with chemicals called bases, like sodium hydroxide. When this happens, it forms a type of salt called a fluorosilicate salt, such as sodium fluorosilicate.

Making Artificial Cryolite

One important use for this acid is in making artificial cryolite. Cryolite is a mineral that is used in the process of making aluminum.

Water Fluoridation

Hexafluorosilicic acid is also used in the fluoridation of water. This means it's added to public water supplies in very small amounts. The main reason for this is to help prevent tooth decay and keep teeth strong.

Safety Information

It's important to know that Hexafluorosilicic acid needs to be handled with care. If it gets hot, it can release a gas called hydrogen fluoride. This gas is not safe to breathe and can be harmful. Because of this, it is considered a toxic substance, similar to hydrofluoric acid, and professionals must use proper safety gear when working with it.

Related pages

• Silicate
• Silicon
• Fluoride

Images for kids

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  This image shows the structure of (H5O2)2SiF6. The dashed lines show how hydrogen and fluoride connect. Green is Fluorine, orange is Silicon, and red is Oxygen.

See also

In Spanish: Ácido hexafluorosilícico para niños